Update RevisionHistory.html

Co-authored-by: gr5 <[email protected]>

Author: atsju

RevisionHistory.html

@@ -376,7 +376,7 @@
 <li>Fixed regression introduced in 7.0.0 breaking "show only average" of astig stats</li>
 <li>Improved waveFront slection display</li>
 <ul>
-    <li>Displayed waveFront is clearly identifiedwith a green circle</li>
+    <li>Displayed waveFront is clearly identified with a green circle</li>
     <li>F2 shortcut can be used to rename waveFront</li>
     <li>delete shortcut can be used to delete waveFront</li>
     <li>enter shortcut can be used to dispaly selected waveFront</li>