fixing too small font in diff UI (#260)

* fixing too small font in diff UI , lower size from 12 to 11 in Part II

changedetectionio/static/styles/diff.css

@@ -3,7 +3,7 @@
   padding: 2em;
   margin: 1em;
   border-radius: 5px;
-  font-size: 9px; }
+  font-size: 11px; }
   #diff-ui table {
     table-layout: fixed;
     width: 100%; }

changedetectionio/static/styles/diff.scss

@@ -4,7 +4,7 @@
     padding: 2em;
     margin: 1em;
     border-radius: 5px;
-    font-size: 9px;
+    font-size: 11px;
 
     table {
         table-layout: fixed;