Slightly tweak the "extract" script.

Flag: EXEMPT host test change only
Bug: 292141694
Test: Manual test -- run the script and check the output
Change-Id: I2cf8c00bcc4d9e347a2f5c4f24fb0e3ba1e1ee93
diff --git a/ravenwood/scripts/extract-last-soong-commands.py b/ravenwood/scripts/extract-last-soong-commands.py
index bdc1de0..c08d4aa 100755
--- a/ravenwood/scripts/extract-last-soong-commands.py
+++ b/ravenwood/scripts/extract-last-soong-commands.py
@@ -48,6 +48,7 @@
     with open(outfile, "w") as out:
         out.write(HEADER)
 
+        count = 0
         with gzip.open(log) as f:
             for line in f:
                 s = line.decode("utf-8")
@@ -63,7 +64,8 @@
                 if m:
                     command = m.groups()[0]
 
-                    out.write('#========\n')
+                    count += 1
+                    out.write(f'### Command {count} ========\n')
 
                     # Show the full command line before executing it.
                     out.write('#echo ' + shlex.quote(command) + '\n')