change "Inspirations" to "Inspo" plant.html

wiki/pages/plant.html

@@ -19,7 +19,7 @@
 
 <div class="row mt-4">
   <div class="col">
-    <h2>Inspirations</h2>
+    <h2>Inspo</h2>
     <hr>
     <ul>
       <li><a href="http://2018.igem.org/Team:Cardiff_Wales/Plant">2018 Cardiff Wales</a></li>