pull_request_template.md: Set path to CONTRIBUTING.md #710

Job	Run time
PHPUnit (PHP 7.2)	2m 44s
PHPUnit (PHP 7.3)	2m 42s
PHPUnit Composer v2 (PHP 7.4)	2m 46s
PHPUnit coverage (PHP 7.4)	58s
PHPUnit (PHP 7.4)	39s
Tests alternative autoloader (PHP 7.1)	14s
PHPUnit (PHP 8.0)	3m 10s
Tests alternative autoloader (PHP 7.2)	13s
PHPUnit (PHP 8.1)	2m 42s
PHPUnit (PHP 7.1)	2m 45s
Tests alternative autoloader (PHP 7.3)	18s
PHPUnit (PHP 8.2)	2m 54s
PHPUnit lowest deps (PHP 7.3)	2m 43s
Tests alternative autoloader (PHP 7.4)	11s
PHPUnit (PHP 8.3)	2m 48s
Tests alternative autoloader (PHP 8.0)	11s
PHPUnit (PHP 8.4)	2m 53s
Windows-Tests with PHP 7.1	1m 16s
Tests alternative autoloader (PHP 8.1)	6s
Windows-Tests with PHP 7.2	56s
Tests alternative autoloader (PHP 8.2)	8s
Windows-Tests with PHP 7.3	56s
Windows-Tests with PHP 7.4	59s
Tests alternative autoloader (PHP 8.3)	7s
Windows-Tests with PHP 8.0	57s
Tests alternative autoloader (PHP 8.4)	13s
Windows-Tests with PHP 8.1	55s
Windows-Tests with PHP 8.2	53s
Windows-Tests with PHP 8.3	1m 1s
Windows-Tests with PHP 8.4	58s
	40m 16s

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