Minor comment text fixes

index.html

@@ -36,15 +36,15 @@
    To render, simply invoke the convenience function `render-with-reagent`
    with a reagent component function as parameter.
  - maximum portability by being contained in a single HTML file
-   (not al all essential, but nice as long as it's feasible in light of the
+   (not at all essential, but nice as long as it's feasible in light of the
    remaining wishes)
  - trivial, but very helpful: can be saved as an 'app' on phone's home screen.
  - history / undo + redo
 
 Current annoyances
  - After (un)zooming&scrolling, the cursor position sometimes no longer
    corresponds to the actual insertion point;
- - Cursor position gets out of focus when deleting/commenting code.
+ - Cursor position being scrolled out of focus when deleting/commenting code.
 
 Other wishes/TODOs (nothing planned):
  - on-screen footer keyboard with opening braces + other useful special chars
@@ -450,7 +450,7 @@
 <!--
     Leaving the following here for now; haven't yet figured out how/why
     https://shaunlebron.github.io/parinfer/demo seems to behave better w.r.t. keeping the focus on the cursor.
-    Simply using exact the same js sources, like here below, does not help though.
+    Simply using the exact same js sources, like here below, does not help though.
 
     <script src="https://shaunlebron.github.io/parinfer/codemirror/lib/codemirror.js"></script>
     <script src="https://shaunlebron.github.io/parinfer/codemirror/addon/selection/active-line.js"></script>