fix: strip git suffix from changelog repository

lib/workers/pr/release-notes.js

@@ -166,11 +166,12 @@ async function addReleaseNotes(input) {
     return input;
   }
   const output = { ...input, versions: [] };
+  const repository = input.project.github.replace(/\.git$/, '');
   for (const v of input.versions) {
-    let releaseNotes = await getReleaseNotesMd(input.project.github, v.version);
+    let releaseNotes = await getReleaseNotesMd(repository, v.version);
     if (!releaseNotes) {
       logger.trace('No markdown release notes found for v' + v.version);
-      releaseNotes = await getReleaseNotes(input.project.github, v.version);
+      releaseNotes = await getReleaseNotes(repository, v.version);
     }
     // Small hack to force display of release notes when there is a compare url
     if (!releaseNotes && v.compare.url) {