Contributing: fixed some typos (#18494)

* Contributing: fixed some typos

* Spotted another typo

* this will cause a breaking change

* made DefaultDisconetTimout readonly

* made ConnectionOptionsSetup class internal

* Revert "made ConnectionOptionsSetup class internal"

This reverts commit 90f94d257bf5c953415c2f581f0a24a6f9bd51f6.

* Update HttpConnectionDispatcher.Log.cs

* Apply suggestions from code review

Co-authored-by: Brennan <brecon@microsoft.com>

src/Middleware/HealthChecks/src/Builder/HealthCheckApplicationBuilderExtensions.cs

@@ -237,7 +237,7 @@ namespace Microsoft.AspNetCore.Builder
 
             // NOTE: we explicitly don't use Map here because it's really common for multiple health
             // check middleware to overlap in paths. Ex: `/health`, `/health/detailed` - this is order
-            // sensititive with Map, and it's really surprising to people.
+            // sensitive with Map, and it's really surprising to people.
             //
             // See:
             // https://github.com/aspnet/Diagnostics/issues/511

src/Middleware/HttpOverrides/src/CertificateForwardingBuilderExtensions.cs

@@ -7,7 +7,7 @@ using Microsoft.AspNetCore.HttpOverrides;
 namespace Microsoft.AspNetCore.Builder
 {
     /// <summary>
-    /// Extension methods for using certificate fowarding.
+    /// Extension methods for using certificate forwarding.
     /// </summary>
     public static class CertificateForwardingBuilderExtensions
     {

src/SignalR/common/Http.Connections/src/Internal/HttpConnectionDispatcher.Log.cs

@@ -113,7 +113,7 @@ namespace Microsoft.AspNetCore.Http.Connections.Internal
                 _receivedDeleteRequestForUnsupportedTransport(logger, transportType, null);
             }
 
-            public static void TerminatingConection(ILogger logger)
+            public static void TerminatingConnection(ILogger logger)
             {
                 _terminatingConnection(logger, null);
             }

src/SignalR/common/Http.Connections/src/Internal/HttpConnectionDispatcher.cs

@@ -489,7 +489,7 @@ namespace Microsoft.AspNetCore.Http.Connections.Internal
                 return;
             }
 
-            Log.TerminatingConection(_logger);
+            Log.TerminatingConnection(_logger);
 
             // Dispose the connection, but don't wait for it. We assign it here so we can wait in tests
             connection.DisposeAndRemoveTask = _manager.DisposeAndRemoveAsync(connection, closeGracefully: false);