minor #14994 [Logger] Add relations between LoggerInterface and verbosity (tjveldhuizen)

This PR was merged into the 4.4 branch.

Discussion
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[Logger] Add relations between LoggerInterface and verbosity

I have a hard time remembering which OutputInterface::VERBOSITY-level matches which method on the LoggerInterface and the number of v's  on the CLI. Therefore I suggest adding this table to the page. Maybe the location is not optimal: feedback welcome.

Commits
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a74de75 Update monolog_console.rst

Author: javiereguiluz

logging/monolog_console.rst

@@ -67,6 +67,16 @@ the console. If they are displayed, they are timestamped and colored appropriate
 Additionally, error logs are written to the error output (``php://stderr``).
 There is no need to conditionally handle the verbosity settings anymore.
 
+===============  =======================================  ============
+LoggerInterface  Verbosity                                Command line
+===============  =======================================  ============
+->error()        OutputInterface::VERBOSITY_QUIET         stderr
+->warning()      OutputInterface::VERBOSITY_NORMAL        stdout
+->notice()       OutputInterface::VERBOSITY_VERBOSE       -v
+->info()         OutputInterface::VERBOSITY_VERY_VERBOSE  -vv
+->debug()        OutputInterface::VERBOSITY_DEBUG         -vvv
+===============  =======================================  ============
+
 The Monolog console handler is enabled by default:
 
 .. configuration-block::