chore: fixes extraneous master references

.gitignore

@@ -1,7 +1,7 @@
 ## Ignore Visual Studio temporary files, build results, and
 ## files generated by popular Visual Studio add-ons.
 ##
-## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore
+## Get latest from https://github.com/github/gitignore/blob/main/VisualStudio.gitignore
 
 # User-specific files
 *.suo

.vscode/launch.json

@@ -4,7 +4,7 @@
         {
             // Use IntelliSense to find out which attributes exist for C# debugging
             // Use hover for the description of the existing attributes
-            // For further information visit https://github.com/OmniSharp/omnisharp-vscode/blob/master/debugger-launchjson.md
+            // For further information visit https://github.com/OmniSharp/omnisharp-vscode/blob/main/debugger-launchjson.md
             "name": "Launch Hidi",
             "type": "coreclr",
             "request": "launch",
@@ -22,7 +22,7 @@
         {
             // Use IntelliSense to find out which attributes exist for C# debugging
             // Use hover for the description of the existing attributes
-            // For further information visit https://github.com/OmniSharp/omnisharp-vscode/blob/master/debugger-launchjson.md
+            // For further information visit https://github.com/OmniSharp/omnisharp-vscode/blob/main/debugger-launchjson.md
             "name": "Launch Workbench",
             "type": "coreclr",
             "request": "launch",

README.md

@@ -81,7 +81,7 @@ var httpClient = new HttpClient
     BaseAddress = new Uri("https://raw.githubusercontent.com/OAI/OpenAPI-Specification/")
 };
 
-var stream = await httpClient.GetStreamAsync("master/examples/v3.0/petstore.yaml");
+var stream = await httpClient.GetStreamAsync("main/examples/v3.0/petstore.yaml");
 
 // Read V3 as YAML
 var openApiDocument = new OpenApiStreamReader().Read(stream, out var diagnostic);