Fixed Javadoc warnings.

src/main/java/org/gitlab4j/api/IssuesApi.java

@@ -286,7 +286,7 @@ public class IssuesApi extends AbstractApi implements Constants {
      * <pre><code>GitLab Endpoint: GET /projects/:id/issues/:issue_iid</code></pre>
      *
      * @param projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance
-     * @param issueid the internal ID of a project's issue
+     * @param issueIid the internal ID of a project's issue
      * @return the specified Issue instance
      * @throws GitLabApiException if any exception occurs
      */

src/main/java/org/gitlab4j/api/ProjectApi.java

@@ -2395,7 +2395,6 @@ public class ProjectApi extends AbstractApi implements Constants {
      *
      * @param projectIdOrPath projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance, required
      * @param avatarFile the File instance of the avatar file to upload
-     * @param mediaType the media type of the avatar file to upload, optional
      * @return the updated Project instance
      * @throws GitLabApiException if any exception occurs
      */

src/main/java/org/gitlab4j/api/RepositoryApi.java

@@ -97,7 +97,7 @@ public class RepositoryApi extends AbstractApi {
      *
      * @param projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance
      * @param branchName the name of the branch to get
-     * @return the branch info for the specified project ID/branch name pair</code></pre>
+     * @return the branch info for the specified project ID/branch name pair
      * @throws GitLabApiException if any exception occurs
      */
     public Branch getBranch(Object projectIdOrPath, String branchName) throws GitLabApiException {