fix(text): Fix small typo in app description

Signed-off-by: Jérémie Tarot (@silopolis) <[email protected]>

apps/encryption/appinfo/info.xml

@@ -6,7 +6,7 @@
 	<summary>Default encryption module for server-side encryption</summary>
 	<description>
 In order to use this encryption module you need to enable server-side encryption in the admin settings. Once enabled this module will encrypt all your files transparently. The encryption is based on AES 256 keys.
-The module will not touch existing files, only new files will be encrypted after server-side encryption was enabled. It is also not possible to disable the encryption again and switch back to a unencrypted system.
+The module will not touch existing files, only new files will be encrypted after server-side encryption was enabled. It is also not possible to disable the encryption again and switch back to an unencrypted system.
 Please read the documentation to know all implications before you decide to enable server-side encryption.
 	</description>
 	<version>2.15.0</version>