Fix spacing and word choice

The spacing of several list items was off by one space.
This MR fixes the spacing for correct syntax
highlighting, and corrects some word usage.

doc/development/agent/local.md

@@ -43,7 +43,7 @@ You can run `kas` and `agentk` locally to test the [Kubernetes Agent](index.md)
    bazel run //cmd/kas -- --configuration-file="$(pwd)/cfg.yaml"
    ```
 
-1. In a new terminal window, run this command to start agentk:
+1. In a new terminal window, run this command to start `agentk`:
 
    ```shell
    bazel run //cmd/agentk -- --kas-address=grpc://127.0.0.1:8150 --token-file="$(pwd)/token.txt"