Fix some issues with the API documentation

Signed-off-by: Carl Schwan <carl@carlschwan.eu>

lib/private/Settings/Section.php

 	}
 
 	/**
-	 * returns the ID of the section. It is supposed to be a lower case string,
+	 * @return string The ID of the section. It is supposed to be a lower case string,
 	 * e.g. 'ldap'
-	 *
-	 * @returns string
 	 */
 	public function getID() {
 		return $this->id;
 	}
 
 	/**
-	 * returns the translated name as it should be displayed, e.g. 'LDAP / AD
+	 * @return string The translated name as it should be displayed, e.g. 'LDAP / AD
 	 * integration'. Use the L10N service to translate it.
-	 *
-	 * @return string
 	 */
 	public function getName() {
 		return $this->name;
 	}
 
 	/**
-	 * returns the relative path to an 16*16 icon describing the section.
+	 * @return string The relative path to an 16*16 icon describing the section.
 	 * e.g. '/core/img/places/files.svg'
 	 *
-	 * @returns string
 	 * @since 12
 	 */
 	public function getIcon() {

lib/public/Files/FileInfo.php

  */
 namespace OCP\Files;
 
+use OCP\Files\Storage\IStorage;
+
 /**
  * Interface FileInfo
  *
 	/**
 	 * Get the storage the file or folder is storage on
 	 *
-	 * @return \OCP\Files\Storage
+	 * @return IStorage
 	 * @since 7.0.0
 	 */
 	public function getStorage();

lib/public/Files/Node.php

 namespace OCP\Files;
 
 use OCP\Lock\LockedException;
+use OCP\Files\Storage\IStorage;
 
 /**
  * Interface Node
 	/**
 	 * Get the storage backend the file or folder is stored on
 	 *
-	 * @return Storage
+	 * @return IStorage
 	 * @throws NotFoundException
 	 * @since 6.0.0
 	 */