Correct news: 0.2.2 not released yet

NEWS.md

 ## regexplain 0.2.x
 
-### 0.2.3
-
-* Use of `knitr` is automatically detected when calling `view_regex()` inside
-  an R Markdown document. The `knitr` parameter of `view_regex()` has been
-  removed. Added `result_only` parameter for interactive viewing. As a side
-  effect, the group coloring CSS is automatically embedded in the HTML output.
-
 ### 0.2.2
 
 * Fix issues with coloring of groups in regexplain gadget when matched groups
 
 * Reduce package size by optimizing images and offloading the screencast gifs to
   the `assets` branch.
+  
+* Use of `knitr` is automatically detected when calling `view_regex()` inside
+  an R Markdown document. The `knitr` parameter of `view_regex()` has been
+  removed. Added `result_only` parameter for interactive viewing. As a side
+  effect, the group coloring CSS is automatically embedded in the HTML output.
 
 ### 0.2.1