fix: correct typo (#22392)

lib/workers/repository/update/pr/changelog/source-github.ts

@@ -195,9 +195,9 @@ function findTagOfRelease(
   tags: string[]
 ): string | undefined {
   const regex = regEx(`(?:${packageName}|release)[@-]`, undefined, false);
-  const excactReleaseRegex = regEx(`${packageName}[@\\-_]v?${depNewVersion}`);
+  const exactReleaseRegex = regEx(`${packageName}[@\\-_]v?${depNewVersion}`);
   const exactTagsList = tags.filter((tag) => {
-    return excactReleaseRegex.test(tag);
+    return exactReleaseRegex.test(tag);
   });
   let tagName: string | undefined;
   if (exactTagsList.length) {