docs: Fix highlighting.

.git/config was marked as "bash" instead of "ini".

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168365 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/GettingStarted.rst b/docs/GettingStarted.rst
index d531250..f173135 100644
--- a/docs/GettingStarted.rst
+++ b/docs/GettingStarted.rst
@@ -583,7 +583,7 @@
 
 Then, your .git/config should have [imap] sections.
 
-.. code-block:: bash
+.. code-block:: ini
 
   [imap]
         host = imaps://imap.gmail.com