Polish "Document git command to clone the repo on Windows"

See gh-12070

CONTRIBUTING.adoc

@@ -211,7 +211,10 @@ check the `build.log` file in the appropriate sample directory.
 
 
 == Cloning the git repository on Windows
-Some files in the git repository may exceed the Windows maximum file path (260 characters), depending on where you clone the repository. If you get `Filename too long` errors, set the `core.longPaths=true` git option:
+Some files in the git repository may exceed the Windows maximum file path (260
+characters), depending on where you clone the repository. If you get `Filename too long`
+errors, set the `core.longPaths=true` git option:
+
 ```
-git clone -c core.longPaths=true https://github.com/spring-projects/spring-boot.git
+git clone -c core.longPaths=true https://github.com/spring-projects/spring-boot
 ```