minor #18867 show how to start symfony server (aliber4079)

This PR was merged into the 6.3 branch.

Discussion
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show how to start symfony server

show how to start symfony server

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Commits
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b8135fc Update page_creation.rst

Author: javiereguiluz

page_creation.rst

@@ -80,6 +80,7 @@ metadata to code):
       }
 
 That's it! If you are using Symfony web server, try it out by going to: http://localhost:8000/lucky/number
+To start the symfony webserver, cd to your project directory and type symfony server:start
 
 .. tip::