docs: rephrase changelog

Author: arildm

CHANGELOG.md

@@ -19,7 +19,7 @@
   - When these are changed, the search is re-triggered automatically
   - The "compile based on" input was relabeled as "group by"
 - The "word" group-by option no longer gets disabled if it's the only selected option
-- Moved "Show context/KWIC" option to the new display options location, rephrased and changed to radio buttons
+- Moved "Show context" option to the new display options location and changed to checkbox
 - Better readability for hit counts in lemgram autocomplete
 - More space in word picture tables [#102](https://github.com/spraakbanken/korp-frontend/issues/102)