Update documentation/cli/08_devnode.md

Co-authored-by: Alexander Kim <alexander@aleo.org>
Signed-off-by: Roy Rotstein <112157037+Roee-87@users.noreply.github.com>

Author: Roee-87

documentation/cli/08_devnode.md

@@ -81,7 +81,7 @@ leo devnode advance [NUM_BLOCKS] [OPTIONS]
 | `NUM_BLOCKS` | `1` | Number of blocks to create |
 | `--socket-addr` | `127.0.0.1:3030` | Address of the running devnode |
 
-**Examples**
+### **Examples**
 
 ```bash
 # Advance by 1 block