Minor docs update (#630)

* Fix typo in PHP INI file instructions

* Update PHP extensions installation in Dockerfile

Redis is included by default, so lets give an example not installed by default

* Refine instructions for adding custom PHP INI files in documentation

---------

Co-authored-by: Jay Rogers <3174134+jaydrogers@users.noreply.github.com>
Co-authored-by: Jay Rogers <jaydrogers@users.noreply.serversideup.net>

Author: Tamas-hi

docs/content/docs/1.getting-started/4.these-images-vs-others.md

@@ -197,7 +197,7 @@ FROM serversideup/php:8.5-cli
 USER root
 
 # Install any PHP extension easily
-RUN install-php-extensions redis imagick mongodb
+RUN install-php-extensions bcmath imagick mongodb
 
 # Switch back to unprivileged user
 USER www-data
@@ -322,4 +322,4 @@ We're here to help! Check out these resources:
 
 ::tip
 Join our community! Star us on [GitHub](https://github.com/serversideup/docker-php) and follow updates.
-::
+::

docs/content/docs/1.getting-started/6.default-configurations.md

@@ -75,7 +75,7 @@ Environment variables give you a ton of flexibility to customize your container
 | **PHP INI file**  | **Description** |
 |-----------------|-----------------|
 | **Image Default** <br /><br /> `/usr/local/etc/php/conf.d/serversideup-docker-php.ini` | This is our production-ready PHP ini file that accepts environment variables. You can [review it in greater detail on GitHub](https://github.com/serversideup/docker-php/blob/main/src/common/usr/local/etc/php/conf.d/serversideup-docker-php.ini){target="_blank"}. |
-| **Adding your own PHP INI file** <br /><br /> `/usr/local/etc/php/conf.d/*.ini` | If you want to use our defaults, you can simple create a `.ini` file in the `/usr/local/etc/php/conf.d/` directory and it will be loaded automatically. This will be loaded *after* our default ini file, so whatever you set in your own ini file will override the default values. |
+| **Adding your own PHP INI file** <br /><br /> `/usr/local/etc/php/conf.d/*.ini` | To set your own PHP settings, simply create a `.ini` file in the `/usr/local/etc/php/conf.d/` directory. It will be loaded automatically *after* our default ini file, so any settings you define will override the defaults. |
 
 :u-button{to="/docs/customizing-the-image/changing-common-php-settings" label="Learn more about changing common PHP settings" aria-label="Learn more about changing common PHP settings" size="md" color="primary" variant="outline"  trailing-icon="i-lucide-arrow-right" class="font-bold ring ring-inset ring-blue-600 text-blue-600 hover:ring-blue-500 hover:text-blue-500"}