Minor typo fix

Author: blyxyas

clippy_lints/src/unflagged_test_modules.rs

@@ -36,7 +36,7 @@ declare_lint_pass!(UnflaggedTestModules => [UNFLAGGED_TEST_MODULES]);
 impl LateLintPass<'_> for UnflaggedTestModules {
     fn check_item_post(&mut self, cx: &LateContext<'_>, item: &rustc_hir::Item<'_>) {
         if let ItemKind::Mod(_) = item.kind {
-            // If module name contains *test* or *tests*. This rules out things like my_super
+            // If module name contains *test* or *tests*.
             if item
                 .ident
                 .name