Update readme.md

Author: SimonCropp

readme.md

@@ -798,11 +798,11 @@ The class `Polyfill` includes the following extension methods:
  * `bool Contains(string, string, StringComparison)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.string.contains#system-string-contains(system-string-system-stringcomparison))
  * `bool Contains(string, char)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.string.contains#system-string-contains(system-char))
  * `void CopyTo(string, Span<char>)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.string.copyto)
- * `bool EndsWith(string, char)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.string.contains#system-string-contains(system-char))
+ * `bool EndsWith(string, char)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.string.endswith#system-string-endswith(system-char))
  * `int GetHashCode(string, StringComparison)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.string.gethashcode#system-string-gethashcode(system-stringcomparison))
  * `string[] Split(string, char, StringSplitOptions)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.string.split#system-string-split(system-char-system-stringsplitoptions))
  * `string[] Split(string, char, int, StringSplitOptions)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.string.split#system-string-split(system-char-system-int32-system-stringsplitoptions))
- * `bool StartsWith(string, char)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.string.contains#system-string-contains(system-char))
+ * `bool StartsWith(string, char)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.string.startswith#system-string-startswith(system-char))
  * `bool TryCopyTo(string, Span<char>)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.string.trycopyto)