Add the full form of AoC in the alt texts

Author: DragonSenseiGuy

pydis_site/templates/events/main_events.html

@@ -38,7 +38,7 @@ <h2 class="title is-4"><a href="{% url "events:page" path="pyweek" %}">PyWeek</a
     </div>
     <div class="card">
         <div class="card-image">
-            <img loading=lazy src="/static/images/events/gallery/adventofcode.png" alt="Server icon for AoC">
+            <img loading=lazy src="/static/images/events/gallery/adventofcode.png" alt="Server icon for Advent of Code">
         </div>
         <div class="card-content">
             <h2 class="title is-4"><a href="{% url "events:page" path="adventofcode" %}">Advent of code</a></h2>
@@ -53,7 +53,7 @@ <h2 class="title is-4"><a href="{% url "events:page" path="adventofcode" %}">Adv
     </div>
     <div class="card">
         <div class="card-image">
-            <img loading=lazy src="/static/images/events/gallery/adventofcode.png" alt="Server icon for AoC">
+            <img loading=lazy src="/static/images/events/gallery/adventofcode.png" alt="Server icon for Advent of Code">
         </div>
         <div class="card-content">
             <h2 class="title is-4"><a href="{% url "events:page" path="revivalofcode" %}">Revival of Code</a></h2>

pydis_site/templates/events/sidebar/adventofcode/useful-links.html

@@ -1,6 +1,6 @@
 <div class="box">
     <div class="has-text-centered">
-        <img src="https://raw.githubusercontent.com/python-discord/branding/main/events/christmas/server_icons/festive_256.gif" style="border-radius: 10px;" alt="Server icon for AoC">
+        <img src="https://raw.githubusercontent.com/python-discord/branding/main/events/christmas/server_icons/festive_256.gif" style="border-radius: 10px;" alt="Server icon for Advent of Code">
     </div>
     <p class="menu-label">Quick links</p>
     <ul class="menu-list">

pydis_site/templates/events/sidebar/revivalofcode.html

@@ -1,6 +1,6 @@
 <div class="box">
     <div class="has-text-centered">
-        <img src="https://raw.githubusercontent.com/python-discord/branding/main/events/christmas/server_icons/festive_256.gif" style="border-radius: 10px;" alt="Server icon for AoC">
+        <img src="https://raw.githubusercontent.com/python-discord/branding/main/events/christmas/server_icons/festive_256.gif" style="border-radius: 10px;" alt="Server icon for Advent of Code">
     </div>
     <p class="menu-label">Quick links</p>
     <ul class="menu-list">