Reformat to remove 80-column violations.
diff --git a/CONTRIBUTING.rst b/CONTRIBUTING.rst
index e6a7180..0b113c0 100644
--- a/CONTRIBUTING.rst
+++ b/CONTRIBUTING.rst
@@ -34,8 +34,8 @@
 - 2 spaces for indentation rather than 4.
 - CamelCase for function and method names rather than words_with_underscores.
 
-The rationale for this is that YAPF was initially developed at Google where these
-two exceptions are still part of the internal Python style guide.
+The rationale for this is that YAPF was initially developed at Google where
+these two exceptions are still part of the internal Python style guide.
 
 Small print
 -----------