docs: Fix PHP docs typo (#34836)

Balboa Codes created 

This fixes a minor typo in the PHP docs.

Release Notes:

- N/A

Change summary

docs/src/languages/php.md | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

Detailed changes

docs/src/languages/php.md 🔗 

@@ -15,7 +15,7 @@ The PHP extension offers both `phpactor` and `intelephense` language server supp
 
 ## Phpactor
 
-The Zed PHP Extension can install `phpactor` automatically but requires `php` to installed and available in your path:
+The Zed PHP Extension can install `phpactor` automatically but requires `php` to be installed and available in your path:
 
 ```sh
 # brew install php            # macOS