minor #16239 Correct spelling & grammar in 4.4 cache.rst (gnito-org)

This PR was merged into the 4.4 branch.

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Correct spelling & grammar in 4.4 cache.rst

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faf0e5e Correct spelling & grammar in 4.4 cache.rst

Author: javiereguiluz

cache.rst

@@ -49,7 +49,7 @@ of:
     An adapter is a *template* that you use to create pools.
 **Provider**
     A provider is a service that some adapters use to connect to the storage.
-    Redis and Memcached are example of such adapters. If a DSN is used as the
+    Redis and Memcached are examples of such adapters. If a DSN is used as the
     provider then a service is automatically created.
 
 There are two pools that are always enabled by default. They are ``cache.app`` and