Fixed docs for required params in the configuration

[michalbundyra]

Q	A
Type	bug
BC Break	no
Fixed issues

Summary

It looks like migrations_namespace and migrations_directory are
mandatory to use any commands. Otherwise we are getting exception.

Ref:

• in AbstractCommand on initialize we validate the configuration:
  

  migrations/lib/Doctrine/Migrations/Tools/Console/Command/AbstractCommand.php

  Lines 67 to 75 in 0069f40

  	public function initialize(
  	InputInterface $input,
  	OutputInterface $output
  	) : void {
  	$this->configuration = $this->getMigrationConfiguration($input, $output);
  	$this->initializeDependencies();
  	$this->configuration->validate();

• and here is the validate method of configuration:
  

  migrations/lib/Doctrine/Migrations/Configuration/Configuration.php

  Lines 264 to 273 in 0069f40

  	public function validate() : void
  	{
  	if ($this->migrationsNamespace === null) {
  	throw MigrationsNamespaceRequired::new();
  	}
  	if ($this->migrationsDirectory === null) {
  	throw MigrationsDirectoryRequired::new();
  	}
  	}

[localheinz]

👍

[alcaeus]

Thanks @webimpress!