note that SourceLinkAzureDevOpsServerGitHost element is mandatory for Microsoft.SourceLink.AzureDevOpsServer.Git (#889)

Author: IanKemp

README.md

@@ -73,16 +73,24 @@ For projects hosted by on-prem [Azure DevOps Server](https://azure.microsoft.com
 </ItemGroup>
 ```
 
-If your server is configurated with non-empty IIS [Virtual Directory](docs/TfsVirtualDirectory/README.md), specify this directory in `SourceLinkAzureDevOpsServerGitHost` item like so:
+You also need to provide the hostname of your DevOps server:
+ 
+```xml
+<ItemGroup>
+  <SourceLinkAzureDevOpsServerGitHost Include="server-name"/>
+</ItemGroup>
+```
+ 
+The `Include` attribute specifies the domain and optionally the port of the server (e.g. `server-name` or `server-name:8080`).
+
+If your server is configured with a non-empty IIS [virtual directory](docs/TfsVirtualDirectory/README.md), specify this directory like so:
 
 ```xml
 <ItemGroup>
   <SourceLinkAzureDevOpsServerGitHost Include="server-name" VirtualDirectory="tfs"/>
 </ItemGroup>
 ```
 
-The `Include` attribute specifies the domain and optionally the port of the server (e.g. `server-name` or `server-name:8080`).
-
 ### GitLab
 
 For projects hosted by [GitLab](https://gitlab.com) reference [Microsoft.SourceLink.GitLab](https://www.nuget.org/packages/Microsoft.SourceLink.GitLab) package: