fix html

Author: martenson

templates/galaxy-qa1.galaxy.cloud.e-infra.cz/static/welcome.html

@@ -26,7 +26,7 @@
     <div class="py-4">
         <div class="container">
             <p class="text-center">
-                <h1>QA1 Test Instance</h1>>
+            <h1>QA1 Test Instance</h1>
             </p>
             <p>
                 Welcome to the Czech Galaxy instance of
@@ -62,7 +62,7 @@ <h1>QA1 Test Instance</h1>>
                     href="https://github.com/galaxyproject/galaxy/blob/dev/CONTRIBUTORS.md">many contributors</a>.
             </p>
             <div class="row">
-                <div class="column" />
+                <div class="column"></div>
                 <div class="column">
                     <a href="https://www.e-infra.cz/" target="_blank">
                         <img src="e-infra_logo.svg" alt="e-infra" style="width: 66%" />
@@ -73,7 +73,7 @@ <h1>QA1 Test Instance</h1>>
                         <img src="elixir_logo.png" alt="elixir" style="width: 66%" />
                     </a>
                 </div>
-                <div class="column" />
+                <div class="column"></div>
             </div>
             <div class="row">
                 <div class="column">