fixup! Adding readme for microsoft/git

By using the '--id' option, we get around any collisions that might happen
in the msstore. See microsoft/VFSForGit#1756 for a
similar resolution to this problem on that side.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>

README.md

@@ -62,7 +62,7 @@ since `winget` is available by default on preview versions of Windows.
 To install with Winget, run
 
 ```shell
-winget install microsoft/git
+winget install --id microsoft.git
 ```
 
 Double-check that you have the right version by running these commands,