Update filesystem.md
Is this change OK? Or, organizing these in a table is better?
@@ -8,10 +8,10 @@ An implementation of the `storagedriver.StorageDriver` interface which uses the
## Parameters
-`rootdirectory`: (optional) The absolute path to a root directory tree in which
+* `rootdirectory`: (optional) The absolute path to a root directory tree in which
to store all registry files. The registry stores all its data here so make sure
there is adequate space available. Defaults to `/var/lib/registry`.
-`maxthreads`: (optional) The maximum number of simultaneous blocking filesystem
+* `maxthreads`: (optional) The maximum number of simultaneous blocking filesystem
operations permitted within the registry. Each operation spawns a new thread and
may cause thread exhaustion issues if many are done in parallel. Defaults to
`100`, and cannot be lower than `25`.
