Add spaces before line continuation characters (#466)

Author: JakeSCahill

modules/ai-agents/pages/mcp/remote/quickstart.adoc

@@ -116,7 +116,7 @@ For BYOC and Dedicated clusters, use:
 [,bash]
 ----
 rpk cloud mcp proxy \
---cluster-id <cluster-id>\
+--cluster-id <cluster-id> \
 --mcp-server-id <server-id> \
 --install --client claude-code
 ----
@@ -126,7 +126,7 @@ For Serverless clusters, use:
 [,bash]
 ----
 rpk cloud mcp proxy \
---serverless-cluster-id <cluster-id>\
+--serverless-cluster-id <cluster-id> \
 --mcp-server-id <server-id> \
 --install --client claude-code
 ----