docs: v3.4.1 changelog

Author: kozistr

docs/changelogs/v3.4.1.md

@@ -15,7 +15,16 @@
     * `AGC` + `Lookahead` variants
     * change default beta1, beta2 to 0.95 and 0.98 respectively
 * Skip adding `Lookahead` wrapper in case of `Ranger*` optimizers, which already have it in `create_optimizer()`. (#340)
+* Improved optimizer visualization. (#345)
+
+### Bug
+
+* Fix to update exp_avg_sq after calculating the denominator in `ADOPT` optimizer. (#346, #347)
 
 ### Docs
 
 * Update the visualizations. (#340)
+
+### Contributions
+
+thanks to @AidinHamedi