fix redirection

Author: meaghanlewis

.openpublishing.redirection.core.json

@@ -1518,7 +1518,7 @@
             "redirect_url": "/dotnet/core/compatibility/sdk/10.0/nugetaudit-transitive-packages"
         },
         {
-            "source_path_from_root": "docs/core/tools/dotnet-migrate.md",
+            "source_path_from_root": "/docs/core/tools/dotnet-migrate.md",
             "redirect_url": "/dotnet/core/porting"
         }
     ]

docs/core/compatibility/sdk/10.0/dotnet-restore-project-json-unsupported.md

@@ -30,15 +30,15 @@ This change can affect [source compatibility](../../categories.md#source-compati
 
 The `project.json` format was originally available only in .NET Core previews (through Preview 2 of .NET Core 1.0) and was completely replaced by PackageReference in 2017. The format has been marked as deprecated since 2017.
 
-When the `project.json` format was replaced, users migrated these projects using the [`dotnet migrate`](../../../tools/dotnet-migrate.md) command, but that command was removed from the CLI in the .NET Core 3.0 SDK.
+When the `project.json` format was replaced, users migrated these projects using the `dotnet migrate` command, but that command was removed from the CLI in the .NET Core 3.0 SDK.
 
 The removal of `project.json` support completes this transition and allows the .NET team to focus on delivering a better experience for PackageReference-based projects.
 
 ## Recommended action
 
 Migrate your `project.json` projects to use PackageReference format instead.
 
-If you have .NET Core based `project.json` projects, you can use older versions of the .NET SDK that still include the [`dotnet migrate` command](../../../tools/dotnet-migrate.md) to convert them to the modern project format.
+If you have .NET Core based `project.json` projects, you can use older versions of the .NET SDK that still include the `dotnet migrate` to convert them to the modern project format.
 
 For more information about migrating from `project.json`, see [Migrating from project.json to .csproj](/nuget/archive/project-json#migrate-projectjson-to-packagereference).