Increase link check timeout for nightly caching job

There are a number of links that are redirects and take a while to resolve sometimes so for the nightly jobs we want to increase the timeout to allow them to complete successfully and get added to the cache.

eng/pipelines/githubio-linkcheck.yml

@@ -25,6 +25,7 @@ jobs:
         -inputCacheFile "$(cachefile)"
         -outputCacheFile "$(cachefile)"
         -devOpsLogging: $true
+        -requestTimeoutSec 60 # For the nightly link checks increase timeout to handle some of the links that are redirects and can take longer
 
   - task: PowerShell@2
     displayName: 'azure-sdk link check with caching'