Add periods for consistency

Author: henrymercer

javascript/ql/lib/CHANGELOG.md

@@ -10,8 +10,8 @@
 
 * Added taint-steps for `String.prototype.toWellFormed`.
 * Added taint-steps for `Map.groupBy` and `Object.groupBy`.
-* Added taint-steps for `Array.prototype.findLast`  
-* Added taint-steps for `Array.prototype.findLastIndex`
+* Added taint-steps for `Array.prototype.findLast`.
+* Added taint-steps for `Array.prototype.findLastIndex`.
 
 ## 2.1.1
 

javascript/ql/lib/change-notes/released/2.2.0.md

@@ -10,5 +10,5 @@
 
 * Added taint-steps for `String.prototype.toWellFormed`.
 * Added taint-steps for `Map.groupBy` and `Object.groupBy`.
-* Added taint-steps for `Array.prototype.findLast`  
-* Added taint-steps for `Array.prototype.findLastIndex`
+* Added taint-steps for `Array.prototype.findLast`.
+* Added taint-steps for `Array.prototype.findLastIndex`.