blog: fix writeup for 3x17 challenge

SteGG200 · SteGG200 · commit c16df4b28263 · 2025-12-26T22:56:58.000+07:00
diff --git a/src/blogs/3x17.md b/src/blogs/3x17.md
@@ -1,7 +1,7 @@
 # Challenge Description
 ## File type
 ```bash
-$ 3x17
+$ file 3x17
 3x17: ELF 64-bit LSB executable, x86-64, version 1 (GNU/Linux), statically linked, for GNU/Linux 3.2.0, BuildID[sha1]=a9f43736cc372b3d1682efa57f19a4d5c70e41d3, stripped
 ```
 
