Fix wrong indentation in doc (#159)

README.md

@@ -675,15 +675,15 @@ dependency: # <16>
       recursive: true # whether to exclude all transitive dependencies brought by <dependency-name>, now only maven project supports this <24>
 ```
 
-1. The `header` section is configurations for source codes license header. If you have mutliple modules or packages in your project that have differing licenses, this section may contain a list of licenses:
+1. The `header` section is configurations for source codes license header. If you have multiple modules or packages in your project that have differing licenses, this section may contain a list of licenses:
 ```yaml
 header:
   - license:
-    spdx-id: Apache-2.0
-    path: "/path/to/module/a"
+      spdx-id: Apache-2.0
+      path: "/path/to/module/a"
   - license:
-    spdx-id: MPL-2.0
-    path: "/path/to/module/b"
+      spdx-id: MPL-2.0
+      path: "/path/to/module/b"
 ```
 2. The [SPDX ID](https://spdx.org/licenses/) of the license, it’s convenient when your license is standard SPDX license, so that you can simply specify this identifier without copying the whole license `content` or `pattern`. This will be used as the content when `fix` command needs to insert a license header.
 3. The copyright owner to replace the `[owner]` in the `SPDX-ID` license template.