Update README.md - backticks

Co-authored-by: Kory Draughn <korydraughn@ymail.com>

Author: d-w-moore

README.md

@@ -936,7 +936,7 @@ Disabling AVU reloads from the iRODS server
 
 With the default setting of `reload = True`, an `iRODSMetaCollection` will
 proactively read all current AVUs back from the iRODS server after any
-metadata write done by the client.  This helps methods such as `keys()` and `items()` 
+metadata write done by the client.  This helps methods such as `keys()` and `items()`
 to return an up-to-date result.   Setting `reload = False` can, however, greatly
 increase code efficiency if for example a lot of AVUs must be added or deleted
 at once without reading any back again.