style: Fix docstring indentation in decode_backtrace.py

Co-Authored-By: bsatrom@blues.com <bsatrom@blues.com>

Author: devin-ai-integration[bot]

ports/espressif/tools/decode_backtrace.py

@@ -1,10 +1,10 @@
 """Simple script that translates "Backtrace:" lines from the ESP output to files
-   and line numbers.
+and line numbers.
 
-   Run with: python3 tools/decode_backtrace.py <board>
+Run with: python3 tools/decode_backtrace.py <board>
 
-   Enter the backtrace line at the "? " prompt. CTRL-C to exit the script.
-   """
+Enter the backtrace line at the "? " prompt. CTRL-C to exit the script.
+"""
 
 import subprocess
 import sys