.github/issue_template: Update `/dump_consensus_state` request. (#5060)

Clarify how to get the `/dump_consensus_state` data. 

Eg. https://github.com/tendermint/tendermint/issues/4926 indicated: "Not sure how to do this."

.github/ISSUE_TEMPLATE/bug-report.md

@@ -37,6 +37,6 @@ manner. We might ask you to provide additional logs and data (tendermint & app).
 
 **node command runtime flags**:
 
-**`/dump_consensus_state` output for consensus bugs**
+**Please provide the output from the `http://<ip>:<port>/dump_consensus_state` RPC endpoint for consensus bugs**
 
 **Anything else we need to know**: