Update doc/fastly-configuration.rst

Co-authored-by: David Buchmann <[email protected]>

doc/fastly-configuration.rst

@@ -16,7 +16,7 @@ Purge
 
 Fastly supports two types of deletion of cached items using tags:
 
-1. Soft Purge: This is the default behavior. It will mark the cached item as stale. Stale items *may* still be served (e.g. with the ``stale-while-revalidate`` or ``stale-on-error`` cache control headers. Once the TTL expires, the stale item will be evicted from the cache and the next request must be fetched from the origin.
+1. Soft Purge: This is the default behavior. It will mark the cached item as stale. Stale items *may* still be served (e.g. with the ``stale-while-revalidate`` or ``stale-on-error`` cache control headers). Once the TTL expires, the stale item will be evicted from the cache and the next request must be fetched from the origin.
 2. Purge: This will immediately evict the cached item from the cache and the next request will be fetched from the origin.
 
 There are different ways to purge the cache: