Docs: Flyteconsole Start Server Documentation Fix (#818)

docs: fix start server command

Signed-off-by: k-kumar-01 <kushalkumargupta4@gmail.com>

Author: K-Kumar-01

README.md

@@ -54,7 +54,9 @@ For help with installing dependencies look into
 
 3. Start the server (uses localhost:3000)
 
-   `bash yarn start `
+   ```bash
+   yarn start
+   ```
 
 4. Explore your local copy at `http://localhost:3000`