Update docs/pos/get-started/becoming-a-validator.md

Co-authored-by: Dra Murphy <149679879+kmurphypolygon@users.noreply.github.com>

Author: hsutaiyu

docs/pos/get-started/becoming-a-validator.md

@@ -177,14 +177,14 @@ The following step-by-step guides will take you through the process of running a
 
 ### Join the network as a validator
 
-* [Start and run the nodes with Ansible](/pos/how-to/validator/validator-ansible)
-* [Start and run the nodes with binaries](/pos/how-to/validator/validator-binaries)
-* [Stake as a validator](/pos/how-to/operate-maintain-node/validator-staking-operations)
+* [Start and run the nodes with Ansible](/pos/how-to/validator/validator-ansible).
+* [Start and run the nodes with binaries](/pos/how-to/validator/validator-binaries).
+* [Stake as a validator](/pos/how-to/operate-maintain-node/validator-staking-operations).
 
 ### Maintain your validator nodes
 
-* [Change the signer address](/pos/how-to/operate-maintain-node/change-signer-address)
-* [Change the commission](/pos/how-to/operate-maintain-node/validator-commission-operations)
+* [Change the signer address](/pos/how-to/operate-maintain-node/change-signer-address).
+* [Change the commission](/pos/how-to/operate-maintain-node/validator-commission-operations).
 
 ### Community assistance