PHPC-1247: Update links to PHP.net docs (#1735)

Also updates canonical URL for internal PHP driver docs

Co-authored-by: Jérôme Tamarelle <[email protected]>

Author: jmikola

.github/workflows/release.yml

@@ -25,7 +25,7 @@ env:
 
     **Documentation**
 
-    Documentation is available on [PHP.net](https://php.net/set.mongodb).
+    Documentation is available on [PHP.net](https://www.php.net/mongodb).
 
     **Installation**
 

README.md

@@ -19,8 +19,8 @@ languages.
 
 ## Documentation
 
- - https://php.net/manual/en/set.mongodb.php
- - https://www.mongodb.com/docs/drivers/php/
+ - https://www.php.net/mongodb
+ - https://www.mongodb.com/docs/drivers/php-drivers/
 
 ## Installation