Fix commit messages text color in dark mode

Changelog: fixed

app/assets/javascripts/diffs/components/commit_item.vue

@@ -173,7 +173,7 @@ export default {
       <pre
         v-if="commit.description_html"
         :class="{ 'js-toggle-content': collapsible, 'd-block': !collapsible }"
-        class="commit-row-description gl-mb-3 text-dark"
+        class="commit-row-description gl-mb-3 gl-text-body"
         v-html="commitDescription"
       ></pre>
     </div>

changelogs/unreleased/329891-dark-mode-commit-messages-in-mrs-have-dark-grey-text-on-slightly-l.yml

+---
+title: Fix commit messages text color in dark mode
+merge_request: 61082
+author:
+type: fixed