Fix file extension in debugger troubleshooting doc (#8756)

A debugger troubleshooting doc had the wrong file extension for macOS native libraries. This fixes it.

This resolves #8754

Author: gregg-miskelly

docs/debugger/Troubleshoot-loading-the-.NET-Debug-Services.md

@@ -46,7 +46,7 @@ You can test for this condition by adding the following code to the start of you
             else if (System.Runtime.InteropServices.RuntimeInformation.IsOSPlatform(System.Runtime.InteropServices.OSPlatform.OSX))
             {
                 nativeLibraryPrefix = "lib";
-                nativeLibraryExtension = ".so";
+                nativeLibraryExtension = ".dylib";
             }
             else
             {
@@ -101,4 +101,4 @@ Step 5: Start debugging. You should hopefully see debugging still fail with the
 ### Error cause 3: Mismatched processor architecture (macOS only)
 
 On ARM64 macOS, this error can be caused if the processor architecture of the debugger is different from the processor architecture of the target process. See [Debugging x64 processes on an arm64 computer
-](Debugging-x64-processes-on-an-arm64-computer) for more information.
+](Debugging-x64-processes-on-an-arm64-computer) for more information.