Fix PHPDoc on setPassword

lib/private/share/share.php

@@ -1219,7 +1219,7 @@ class Share extends Constants {
 	}
 
 	/**
-	 * Set expiration date for a share
+	 * Set password for a public link share
 	 *
 	 * @param IUserSession $userSession
 	 * @param IDBConnection $connection

lib/public/share.php

@@ -344,7 +344,7 @@ class Share extends \OC\Share\Constants {
 	}
 
 	/**
-	 * Set expiration date for a share
+	 * Set password for a public link share
 	 * @param int $shareId
 	 * @param string $password
 	 * @return boolean