added comment

app/utils.py

@@ -191,6 +191,7 @@ def allowlist_html(html: str) -> str:
         url = False
         for t in re_url.split(tag.string):
             if re_url.match(t):
+                # Avoid picking up trailing punctuation for raw URLs in text
                 href = t[:-1] if t[-1] in ['.', ',', ')', '!', ':', ';', '?'] else t
                 a = soup.new_tag("a", href=href)
                 a.string = href