add requirements

src/skill_tree/img.py

@@ -33,7 +33,10 @@ class ImgWalker():
                     md_new = []
                     for line in md_lines:
                         new_line = line.replace(
-                            '![](./', f'![](https://gitcode.net/csdn/skill_tree_opencv/-/raw/master/{base}/')
+                            '![](./', f'![](https://gitcode.net/csdn/skill_tree_git_md_linux/-/raw/master/{base}/')
+
+
+<br/>
                         md_new.append(new_line)
                     md_new.append('')
                     simple_list_md_dump(md_file, md_new)