Issue #3449084 by jwilson3: docs fixes and bug fix for 'ddev phpstan'

.ddev/commands/web/phpstan

@@ -16,4 +16,4 @@ test -e phpstan.neon || curl -OL https://git.drupalcode.org/project/gitlab_templ
 export COMPOSER=composer.contrib.json
 .ddev/commands/web/expand-composer-json "$DDEV_PROJECT_NAME"
 phpstan analyse $DDEV_DOCROOT/modules/custom "$@"
-rm composer.contrib.json composer.contrib.lock
+rm composer.contrib.json

CONTRIBUTING.md

@@ -28,11 +28,11 @@ You may setup your local environment with [Ddev]. This project leverages the
 
 6.  Visit site in browser.
 
-        ddev describe
+        ddev launch
 
     Or, login as user 1:
 
-        ddev drush uli
+        ddev drush user:login
 
 7.  Check code changes with phpcs and phpstan.