use relative link to vcpkg docs

Author: ericbrumer

docs/overview/acquire-msvc.md

@@ -199,7 +199,7 @@ cmake -G "Visual Studio 18 2026" -T "version=14.52" ..\
 
 ### vcpkg
 
-Configure vcpkg with the [VCPKG_PLATFORM_TOOLSET_VERSION](https://learn.microsoft.com/vcpkg/users/triplets#vcpkg_platform_toolset_version) triplet. For example:
+Configure vcpkg with the [VCPKG_PLATFORM_TOOLSET_VERSION](/vcpkg/users/triplets#vcpkg_platform_toolset_version) triplet. For example:
 
 ```
 set(VCPKG_PLATFORM_TOOLSET_VERSION "14.50")