Fix broken link

Author: AArnott

.github/workflows/docs_validate.yml

@@ -15,7 +15,7 @@ jobs:
     - name: 🔗 Markup Link Checker (mlc)
       uses: becheran/[email protected]
       with:
-        args: --do-not-warn-for-redirect-to https://learn.microsoft.com*,https://dev.azure.com/*,https://app.codecov.io/*,https://msrc.microsoft.com/*,https://www.microsoft.com/en-us/msrc* -p docfx -i https://aka.ms/onboardsupport,https://aka.ms/spot,https://www.microsoft.com/msrc/cvd,https://www.microsoft.com/msrc
+        args: --do-not-warn-for-redirect-to https://learn.microsoft.com*,https://dev.azure.com/*,https://app.codecov.io/*,https://msrc.microsoft.com/*,https://www.microsoft.com/en-us/msrc* -p docfx -i https://aka.ms/onboardsupport,https://aka.ms/spot,https://www.microsoft.com/msrc/cvd,https://www.microsoft.com/msrc,https://microsoft.sharepoint.com/*
     - name: ⚙ Install prerequisites
       run: |
         ./init.ps1 -UpgradePrerequisites

doc/analyzers/editorconfigs/README.md

@@ -25,7 +25,7 @@ While several project types have specific .editorconfig files defined in this fo
 Libraries that may run in any process, whether they have a main thread or not, should code themselves defensively to avoid any dependency on the main thread so that applications that do not follow `JoinableTaskFactory` rules can avoid deadlocks even when synchronously blocking their main thread using `Task.Wait()` on code running inside your library.
 In particular, shared libraries of general interest should _always_ use `.ConfigureAwait(false)` when awaiting on tasks.
 
-[Learn more about authoring libraries following best threading practices](../library_with_jtf.md).
+[Learn more about authoring libraries following best threading practices](../../library_with_jtf.md).
 
 ### Libraries that run inside a JoinableTaskFactory-compliant application