Fix minor errors in documentation

diff --git a/src/library/BPlusTree.php b/src/library/BPlusTree.php
index 1e89d3d4b..79893fdf5 100644
--- a/src/library/BPlusTree.php
+++ b/src/library/BPlusTree.php
@@ -445,7 +445,7 @@ class BPlusTree
      * then rename this the the least node of the root, and call updateNodePath
      * on this to restore the BPlusTree property.
      *
-     * @return @return bool success (true) or failure (false)
+     * @return bool success (true) or failure (false)
      */
     public function splitRootNode()
     {
diff --git a/src/library/media_jobs/DescriptionUpdateJob.php b/src/library/media_jobs/DescriptionUpdateJob.php
index 3ed9c3241..870ccbd7a 100644
--- a/src/library/media_jobs/DescriptionUpdateJob.php
+++ b/src/library/media_jobs/DescriptionUpdateJob.php
@@ -406,7 +406,7 @@ class DescriptionUpdateJob extends MediaJob
      *
      * @param $page string the html string of the details page
      * @param $source array search source details
-     * @return $details string details found using xpaths
+     * @return string details found using xpaths
      */
     public function getDetails($page, $source, $test_mode = false)
     {