Fixed bad f-string (pyrogram#476)

Mahesh0253 · web-flow · commit eed3221ecb60 · 2020-08-26T19:46:19.000+02:00
diff --git a/pyrogram/parser/html.py b/pyrogram/parser/html.py
@@ -155,7 +155,7 @@ def unparse(text: str, entities: list):
 
             if entity_type in ("bold", "italic", "underline", "strike"):
                 start_tag = f"<{entity_type[0]}>"
-                end_tag = "f</{entity_type[0]}>"
+                end_tag = f"</{entity_type[0]}>"
             elif entity_type in ("code", "pre", "blockquote"):
                 start_tag = f"<{entity_type}>"
                 end_tag = f"</{entity_type}>"
