scripts: improve create-dfu-image.sh

Signed-off-by: Onur Özkan <work@onurozkan.dev>

scripts/analyze-fw.py

@@ -2,7 +2,7 @@
 """Show flash, static RAM and ELF-section use for embedded firmware.
 
 Usage:
-    python3 scripts/analyze_kaptan_firmware.py <firmware.elf> <memory.x>
+    scripts/analyze-fw.py <firmware.elf> <memory.x>
 """
 
 import re