docs(file): update file description and add more file examples (#965)

Author: scaleway-bot

scaleway-async/scaleway_async/file/v1alpha1/api.py

@@ -400,7 +400,6 @@ async def update_file_system(
         """
         Update filesystem properties.
         Update the technical details of a filesystem, such as its name, tags or its new size.
-        You can only resize a filesystem to a larger size.
         :param filesystem_id: UUID of the filesystem.
         :param region: Region to target. If none is passed will use default region from the config.
         :param name: When defined, is the new name of the filesystem.

scaleway/scaleway/file/v1alpha1/api.py

@@ -398,7 +398,6 @@ def update_file_system(
         """
         Update filesystem properties.
         Update the technical details of a filesystem, such as its name, tags or its new size.
-        You can only resize a filesystem to a larger size.
         :param filesystem_id: UUID of the filesystem.
         :param region: Region to target. If none is passed will use default region from the config.
         :param name: When defined, is the new name of the filesystem.