minor #11785 Added a missing redirection for a deleted article (javiereguiluz)

This PR was merged into the 4.2 branch.

Discussion
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Added a missing redirection for a deleted article

@linaori reported on Symfony Slack that some Google result has a link to https://symfony.com/doc/4.1/profiler/storage.html, which no longer exists (it existed in 3.4 and before).

Apparently we forgot to add the redirection when we removed this page. We can't fix 4.1 (because that branch is no longer supported), but at least we can fix it in 4.2 and later.

Commits
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f0a565d Added a missing redirection for a deleted article

Author: javiereguiluz

_build/redirection_map

@@ -422,3 +422,4 @@
 /configuration/environments /configuration
 /configuration/configuration_organization /configuration
 /contributing/community/other /contributing/community
+/profiler/storage /profiler