Add rules

linter/rules/content_about.py

@@ -1,20 +1,34 @@
 import pathlib
 
 here = pathlib.Path(__file__).parent
-file_readme = here / './../readme.md'
+file_readme = here / '../../test.md'
 with open(file_readme, 'r') as read_readme:
     content_readme = read_readme.readlines()
 
 
 def content_about():
-    content_about_errors_nums = []
+    """
+    Looks for trailing slashes and words separated by commas at
+    every "Content about:" section found in the readme.md file
+    (this is, the list itself).
+    """
+
+    content_about_result = 'No errors found.'
+    # content_about_errors = {}
     content_about_line = 'Content about:'
 
     for j, i in enumerate(content_readme):
         if content_about_line in i:
+            # content_about_words = i[len(content_about_line):-2]
+
             if i[-2] != '\\':
-                content_about_errors_nums.append(j)
-    return content_about_errors_nums
+                content_readme[j] = i.replace('&', '\\')
+                with open(file_readme, 'w') as write_readme:
+                    write_readme.writelines(content_readme)
+                content_about_result = "Found errors. Fixed them."
+                # content_about_errors.append(j)
+    return content_about_result
+    # return content_about_errors
 
 
-content_about_errors_nums = content_about()
+print(content_about())