repo: update the organisations for migrated repositories

Update the organisation for the repositories which have migrated from
apple to swiftlang.

default.xml

@@ -6,44 +6,44 @@
 
   <manifest-server url="http://stable.swift.dt.compnerd.org"/>
 
-  <project remote="github" name="apple/llvm-project" path="llvm-project" revision="stable/20230725" />
-  <project remote="github" name="apple/indexstore-db" path="indexstore-db" />
-  <project remote="github" name="apple/sourcekit-lsp" path="sourcekit-lsp" />
-  <project remote="github" name="apple/swift" path="swift" />
+  <project remote="github" name="swiftlang/llvm-project" path="llvm-project" revision="stable/20230725" />
+  <project remote="github" name="swiftlang/indexstore-db" path="indexstore-db" />
+  <project remote="github" name="swiftlang/sourcekit-lsp" path="sourcekit-lsp" />
+  <project remote="github" name="swiftlang/swift" path="swift" />
   <project remote="github" name="apple/swift-argument-parser" path="swift-argument-parser" revision="refs/tags/1.4.0" />
   <project remote="github" name="apple/swift-asn1" path="swift-asn1" revision="refs/tags/1.0.0" />
   <project remote="github" name="apple/swift-atomics" path="swift-atomics" revision="refs/tags/1.2.0" />
   <project remote="github" name="apple/swift-certificates" path="swift-certificates" revision="refs/tags/1.0.1" />
-  <project remote="github" name="apple/swift-cmark" path="cmark" revision="gfm" />
+  <project remote="github" name="swiftlang/swift-cmark" path="cmark" revision="gfm" />
   <project remote="github" name="apple/swift-collections" path="swift-collections" revision="refs/tags/1.1.2" />
   <project remote="github" name="apple/swift-corelibs-libdispatch" path="swift-corelibs-libdispatch" />
   <project remote="github" name="apple/swift-corelibs-foundation" path="swift-corelibs-foundation" />
-  <project remote="github" name="apple/swift-corelibs-xctest" path="swift-corelibs-xctest" />
+  <project remote="github" name="swiftlang/swift-corelibs-xctest" path="swift-corelibs-xctest" />
   <project remote="github" name="apple/swift-crypto" path="swift-crypto" revision="refs/tags/3.0.0" />
-  <project remote="github" name="apple/swift-docc" path="swift-docc" />
-  <project remote="github" name="apple/swift-docc-plugin" path="swift-docc-plugin" revision="refs/tags/1.0.0" />
-  <project remote="github" name="apple/swift-docc-render" path="swift-docc-render" />
-  <project remote="github" name="apple/swift-docc-render-artifact" path="swift-docc-render-artifact" />
-  <project remote="github" name="apple/swift-docc-symbolkit" path="swift-docc-symbolkit" />
-  <project remote="github" name="apple/swift-driver" path="swift-driver" />
-  <project remote="github" name="apple/swift-experimental-string-processing" path="swift-experimental-string-processing" revision="swift/main" />
-  <project remote="github" name="apple/swift-format" path="swift-format" />
+  <project remote="github" name="swiftlang/swift-docc" path="swift-docc" />
+  <project remote="github" name="swiftlang/swift-docc-plugin" path="swift-docc-plugin" revision="refs/tags/1.0.0" />
+  <project remote="github" name="swiftlang/swift-docc-render" path="swift-docc-render" />
+  <project remote="github" name="swiftlang/swift-docc-render-artifact" path="swift-docc-render-artifact" />
+  <project remote="github" name="swiftlang/swift-docc-symbolkit" path="swift-docc-symbolkit" />
+  <project remote="github" name="swiftlang/swift-driver" path="swift-driver" />
+  <project remote="github" name="swiftlang/swift-experimental-string-processing" path="swift-experimental-string-processing" revision="swift/main" />
+  <project remote="github" name="swiftlang/swift-format" path="swift-format" />
   <project remote="github" name="apple/swift-foundation" path="swift-foundation" />
   <project remote="github" name="apple/swift-foundation-icu" path="swift-foundation-icu" />
-  <project remote="github" name="apple/swift-installer-scripts" path="swift-installer-scripts" />
-  <project remote="github" name="apple/swift-llbuild" path="llbuild" />
-  <project remote="github" name="apple/swift-lmdb" path="swift-lmdb" />
+  <project remote="github" name="swiftlang/swift-installer-scripts" path="swift-installer-scripts" />
+  <project remote="github" name="swiftlang/swift-llbuild" path="llbuild" />
+  <project remote="github" name="swiftlang/swift-lmdb" path="swift-lmdb" />
   <project remote="github" name="apple/swift-log" path="swift-log" groups="notdefault" />
-  <project remote="github" name="apple/swift-markdown" path="swift-markdown" />
+  <project remote="github" name="swiftlang/swift-markdown" path="swift-markdown" />
   <project remote="github" name="apple/swift-nio" path="swift-nio" revisions="refs/tags/2.65.0" />
   <project remote="github" name="apple/swift-numerics" path="swift-numerics" groups="notdefault" />
-  <project remote="github" name="apple/swift-package-manager" path="swift-package-manager" />
+  <project remote="github" name="swiftlang/swift-package-manager" path="swift-package-manager" />
   <project remote="github" name="apple/swift-protobuf" path="swift-protobuf" groups="notdefault" />
-  <project remote="github" name="apple/swift-syntax" path="swift-syntax" />
+  <project remote="github" name="swiftlang/swift-syntax" path="swift-syntax" />
   <project remote="github" name="apple/swift-system" path="swift-system" revision="refs/tags/1.3.0" />
-  <project remote="github" name="apple/swift-testing" path="swift-testing" />
+  <project remote="github" name="swiftlang/swift-testing" path="swift-testing" />
   <project remote="github" name="swiftlang/swift-toolchain-sqlite" path="swift-toolchain-sqlite" />
-  <project remote="github" name="apple/swift-tools-support-core" path="swift-tools-support-core" />
+  <project remote="github" name="swiftlang/swift-tools-support-core" path="swift-tools-support-core" />
   <project remote="github" name="apple/swift-xcode-playground-support" path="swift-xcode-playground-support" groups="notdefault" />
 
   <project remote="github" name="compnerd/ds2" path="ds2" />