Match install directions to actual filename for phpstan config file

[ericpoe]

Q	A
License	MIT
Docs Issue/PR	#1555

The file in the repo is phpstan.dist.neon but the text said phpstan.neon.dist.

According to the docs, either phpstan.dist.neon or phpstan.neon.dist are acceptable (see: https://phpstan.org/config-reference#config-file). I'm sticking with phpstan.dist.neon since text editors that recognize the .neon extension will render the contents of the file nicely.

[github-actions]

Thanks for the PR 😍

How to test these changes in your application

1. Define the SYMFONY_ENDPOINT environment variable:

   # On Unix-like (BSD, Linux and macOS)
   export SYMFONY_ENDPOINT=https://raw.githubusercontent.com/symfony/recipes-contrib/flex/pull-1556/index.json
   # On Windows
   SET SYMFONY_ENDPOINT=https://raw.githubusercontent.com/symfony/recipes-contrib/flex/pull-1556/index.json

2. Install the package(s) related to this recipe:

   composer req 'symfony/flex:^1.16'
   composer req 'phpstan/phpstan:^1.0'

3. Don't forget to unset the SYMFONY_ENDPOINT environment variable when done:

   # On Unix-like (BSD, Linux and macOS)
   unset SYMFONY_ENDPOINT
   # On Windows
   SET SYMFONY_ENDPOINT=

Diff between recipe versions

In order to help with the review stage, I'm in charge of computing the diff between the various versions of patched recipes.
I'm going keep this comment up to date with any updates of the attached patch.

[weaverryan]

👍 Comes from #1540 - thanks!