Update babykernel_uiuctf_2025.md

Author: AmeliaYeah

content/posts/babykernel_uiuctf_2025.md

@@ -248,7 +248,7 @@ In particular, at `buf+32`, a pointer to [ptm_unix98_ops](https://elixir.bootlin
 The start of the kernel is at `startup_64`.
 
 ```bash
-~ # cat /proc/kallsyms | grep -i startup_64
+~# cat /proc/kallsyms | grep -i startup_64
 ffffffff90e00000 T startup_64
 ```
 
@@ -568,4 +568,4 @@ Executing; starting 0xffffffffb7f2e788 ending 0xffffffffb7cb9970
 success, returned 0
 ~# cat /flag.txt
 uiuctf{use_after_free_ecda3a86}
-```
+```