GitHub Pull-Request Review

How Do Need To Review the Pull-Request for Docs in GitHub

gitGraph	
       commit id: "1-1"
       commit id: "1-2"
       
       branch Alex
       commit id: "2-1"
       commit id: "2-2"
       commit id: "2-3"
       
       checkout main
       commit id: "1-3"
       commit id: "1-4"
       
       merge Alex
       
       branch Chris
       commit id: "3-1"
  
       checkout main
       commit id: "1-5"
       commit id: "1-6"