Doc/: Remove an extra space

Change-Id: I462d0bd3e9f3b425631987fa793d29323c3f9d61
Signed-off-by: Patrick Georgi <patrick@coreboot.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78021
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@gmail.com>
diff --git a/Documentation/contributing/gerrit_guidelines.md b/Documentation/contributing/gerrit_guidelines.md
index 9b0cc5f..235277b 100644
--- a/Documentation/contributing/gerrit_guidelines.md
+++ b/Documentation/contributing/gerrit_guidelines.md
@@ -9,7 +9,7 @@
 
 Note that as with many rules, there are exceptions. Some have been noted
 in the 'More Detail' section. If you feel there is an exception not listed
-here, please discuss it in the mailing list to get this document  updated.
+here, please discuss it in the mailing list to get this document updated.
 Don't just assume that it's okay, even if someone on IRC says it is.