Update sponsorship

Author: puremourning

README.md

@@ -3894,7 +3894,7 @@ Sponsorship
 
 If you like YCM so much that you're wiling to part with your hard-earned cash, please consider donating to one of the following charities, which are meaningful to the current maintainers (in no particular order):
 
-* [Greyhound Rescue Wales](https://greyhoundrescuewales.co.uk)
+* [Hector's Greyhound Rescue](https://www.hectorsgreyhoundrescue.org)
 * [Be Humane](https://www.budihuman.rs/en)
 * [Cancer Research UK](https://www.cancerresearchuk.org)
 * [ICCF Holland](https://iccf.nl)