docs: tweaked the addition to CHANGELOG.md to be more consistent with past entries

Author: gkc

CHANGELOG.md

@@ -1,6 +1,5 @@
 ## 2.2.0
-- Update `asn1lib` dependency to ^1.5.0 and fix the resulting warnings about 
-  unnecessary null-safety operations in RSAPublicKey and RSAPrivateKey
+- Update `asn1lib` dependency to ^1.5.0 and fix the resulting lint warnings 
 
 ## 2.1.0
 - Add `KeypairFactory`, `RSAKeypairFactory` and `ECKeypairFactory`