fix: removed the staging documentation links

Author: abhinav-from-contentstack

src/main/java/com/contentstack/cms/stack/Merge.java

@@ -41,7 +41,7 @@
  * @author ishaileshmishra
  * @version v1.0.0
  * @see <a href=
- * "https://stag-www.contentstack.com/docs/developers/apis/content-management-api/#merge-branches">Merge
+ * "https://www.contentstack.com/docs/developers/apis/content-management-api/#merge-branches">Merge
  * Branches </a>
  * @since 2023 -June-30
  */
@@ -128,7 +128,7 @@ public Call<ResponseBody> branch(@NotNull String compareBranch, JSONObject reque
      *
      * @return the call
      * @see <a href=
-     * "https://stag-www.contentstack.com/docs/developers/apis/content-management-api/#get-all-merge-jobs"></a>Get
+     * "https://www.contentstack.com/docs/developers/apis/content-management-api/#get-all-merge-jobs"></a>Get
      * all
      * Merge Jobs
      */
@@ -144,7 +144,7 @@ public Call<ResponseBody> find() {
      * @param mergeJobUid the key of the header to be added
      * @return the call
      * @see <a href=
-     * "https://stag-www.contentstack.com/docs/developers/apis/content-management-api/#get-single-merge-job"></a>Get
+     * "https://www.contentstack.com/docs/developers/apis/content-management-api/#get-single-merge-job"></a>Get
      * a
      * Single Merge Job
      */