Fix a heading in the validation documentation

The heading for the section that lists the validations that are
performed on code-owners.config files was identical with the heading of
the section that list the validation that are performed on code owner
config files (aka OWNERS files).

Signed-off-by: Edwin Kempin <ekempin@google.com>
Change-Id: I1f101173e210a03da39da10f6e7342de0b585e3b

resources/Documentation/validation.md

diff --git a/resources/Documentation/validation.md b/resources/Documentation/validation.md
index 4040aa0..ef1b4ce 100644
--- a/resources/Documentation/validation.md
+++ b/resources/Documentation/validation.md
@@ -131,7 +131,7 @@
   [code owner override](user-guide.html#codeOwnerOverride).
 
 
-### <a id="codeOwnerConfigFileChecks">Validation checks for code owner config files
+### <a id="codeOwnersConfigFileChecks">Validation checks for code-owners.config files
 
 For the [code-owner.config](config.html#projectLevelConfigFile) in the
 `refs/meta/config` branch the following checks are performed: