fix typo

php/content.md

@@ -56,7 +56,7 @@ Where `src/` is the directory containing all your php code and `config/` contain
 
 We provide two convenient scripts named `docker-php-ext-configure` and `docker-php-ext-install`, you can use them to easily install PHP extension.
 
-For example, if you want to have a PHP-FPM image with `iconv`, `mcrypt` and `gd` extensions, you can inheriting the base image that you like, and write your own `Dockerfile` like this:
+For example, if you want to have a PHP-FPM image with `iconv`, `mcrypt` and `gd` extensions, you can inherit the base image that you like, and write your own `Dockerfile` like this:
 
 	FROM php:5.6-fpm
 	# Install modules