spelling errors are meant to be -1 only

the priority argument is not the gerrit score, not even inverted ...

Change-Id: Iec9081449bc9113715b68d2f7268939f6b568fef
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>

git-hooks/sanitize-commit

@@ -120,7 +120,7 @@ sub complain_spelling
 
     foreach my $line (@lines) {
         foreach my $error (@{$errors->{$line}}) {
-            &complain("$line: possible spelling error: $error", "spell", 1);
+            &complain("$line: possible spelling error: $error", "spell");
         }
     }
 }