Update README.md

Added image credits

README.md

@@ -6,5 +6,12 @@ The code in this repository is licensed under the [GNU Affero General Public Lic
 
 The icon for the 'English Wikipedia Link Converter' Telegram Bot is licensed under a [Creative Commons Attribution-ShareAlike 4.0 International License (CC BY-SA 4.0)][cc-by-sa]. See the [icon directory](https://github.com/JnTon/English-Wikipedia-Link-Converter-Telegram-Bot/tree/main/Telegram-Bot-Icon) for more details.
 
+### Image Credits
+
+The bot's icon incorporates images from the following sources:
+- **Wikipedia logo**, Version2 by Vanished user 24kwjf10h32h, Version 1 by Nohat (concept by Paullusmagnus); Wikimedia., is used under a [Creative Commons Attribution-ShareAlike 3.0 Unported License (CC BY-SA 3.0)][cc-by-sa-3.0] and can be found [here on Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Wikipedia-logo-v2-square.svg).
+- **Left arrow**, by Icons8 is licensed under [CC0](https://creativecommons.org/share-your-work/public-domain/cc0/) and is available [here on Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Left-arrow_(61413)_-_The_Noun_Project.svg).
+
 
 [cc-by-sa]: http://creativecommons.org/licenses/by-sa/4.0/
+[cc-by-sa-3.0]: https://creativecommons.org/licenses/by-sa/3.0