fix minor bug in random git commit script

src/random_git_commit.py

@@ -7,7 +7,7 @@ import numpy as np
 
 def generate_random_change():
     num = np.random.randint(1_000, 1_000_000)
-    msg = f"random number for commit: {num:d}\n"
+    msg = f"random number for commit: {num:d}\n\n"
     return msg