fixed typos

apps/files_encryption/appinfo/spec.txt

@@ -16,7 +16,7 @@ Encrypted files
   - Sharekey are stored in /data/user/files_encryption/share-files
   
 - File extensions:
-  - Catfiles have keep the file extension of the original file, pre-encryption
+  - Catfiles have to keep the file extension of the original file, pre-encryption
   - Keyfiles use .keyfile
   - Sharekeys have .shareKey
   

apps/files_encryption/hooks/hooks.php

@@ -320,7 +320,7 @@ class Hooks {
 
 			$sharingEnabled = \OCP\Share::isEnabled();
 
-			// if a folder was shared, get a list if all (sub-)folders
+			// if a folder was shared, get a list of all (sub-)folders
 			if ($params['itemType'] === 'folder') {
 				$allFiles = $util->getAllFiles($path);
 			} else {