minor symfony#11182 Improve now what sentence (xuanquynh)

This PR was merged into the 3.4 branch.

Discussion
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Improve now what sentence

The "Now What?" section means 2 things:
+ Tell the developers that the component is ready.
+ Tell the developers to go through a specific documentation.

Therefore, I think it should be separated into two sentences for readable reason. By the way, I just remove unnecessary word "that" and add a comma.

Commits
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6b6a127 Improve now what sentence

Author: xabbuh

components/using_components.rst

@@ -72,7 +72,7 @@ may not actually need.
 Now what?
 ---------
 
-Now that the component is installed and autoloaded, read the specific component's
+Now, the component is installed and autoloaded. Read the specific component's
 documentation to find out more about how to use it.
 
 And have fun!