fix: update pkg-config configure flag

It is `--disable-host-tool`, not `--disable-host-too`. That was probably
ignored, so the flag might not be required to begin with.

Signed-off-by: Attila Oláh <attilaolah@gmail.com>
Signed-off-by: Andrey Smirnov <andrey.smirnov@siderolabs.com>

pkg-config/pkg.yaml

@@ -16,7 +16,7 @@ steps:
         ../configure \
             --prefix=${TOOLCHAIN} \
             --with-internal-glib \
-            --disable-host-too
+            --disable-host-tool
     build:
       - |
         cd build