Update release log.

Author: guzman-raphael

docs-parts/intro/Releases_lang1.rst

@@ -1,7 +1,7 @@
 3.4.2 -- March 16, 2021
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-* Bugfix: Fetchn with zero results throws an error (#353) PR #???
-* Bugfix: Syntax error in documentation for next auto_increment value (#352) PR #???
+* Bugfix: Fetchn with zero results throws an error (#353) PR #355
+* Bugfix: Syntax error in documentation for next auto_increment value (#352) PR #355
 
 3.4.1 -- December 18, 2020
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