minor #5381 remove Yoda condition (greg0ire)

This PR was merged into the 2.3 branch.

Discussion
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remove Yoda condition

Yoda conditions : a questionable best practice that makes code less error-prone, but also harder to read for people that don't share the same grammar rules as people from Dagobah. Anyway, they are useful when you want to avoid confusing assignment and equality operators, but I doubt people often write `=` while meaning to write `<=`.

Commits
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9dcac5a remove Yoda condition

components/console/introduction.rst

@@ -198,7 +198,7 @@ level of verbosity.
 It is possible to print a message in a command for only a specific verbosity
 level. For example::
 
-    if (OutputInterface::VERBOSITY_VERBOSE <= $output->getVerbosity()) {
+    if ($output->getVerbosity() >= OutputInterface::VERBOSITY_VERBOSE) {
         $output->writeln(...);
     }