Corrects spelling of some comments (#2461)

benchmarks/Kestrel.Performance/AsciiBytesToStringBenchmark.cs

@@ -224,7 +224,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Performance
 
         public static unsafe bool TryGetAsciiStringVectorWiden(byte* input, char* output, int count)
         {
-            // Calcuate end position
+            // Calculate end position
             var end = input + count;
             // Start as valid
             var isValid = true;
@@ -324,7 +324,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Performance
 
         public static unsafe bool TryGetAsciiStringVectorCheck(byte* input, char* output, int count)
         {
-            // Calcuate end position
+            // Calculate end position
             var end = input + count;
             // Start as valid
             var isValid = true;

src/Kestrel.Core/Internal/Http/Http1MessageBody.cs

@@ -428,7 +428,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
                     readableBuffer = readableBuffer.Slice(consumed);
                 }
 
-                // _consumedBytes aren't tracked for trailer headers, since headers have seperate limits.
+                // _consumedBytes aren't tracked for trailer headers, since headers have separate limits.
                 if (_mode == Mode.TrailerHeaders)
                 {
                     if (_context.TakeMessageHeaders(readableBuffer, out consumed, out examined))

src/Kestrel.Core/Internal/Infrastructure/StringUtilities.cs

@@ -11,7 +11,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Infrastructure
     {
         public static unsafe bool TryGetAsciiString(byte* input, char* output, int count)
         {
-            // Calcuate end position
+            // Calculate end position
             var end = input + count;
             // Start as valid
             var isValid = true;

src/Kestrel.Transport.Libuv/Internal/LibuvThread.cs

@@ -305,7 +305,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv.Internal
                 _post.Reference();
                 _post.Dispose();
 
-                // We need this walk because we call ReadStop on on accepted connections when there's back pressure
+                // We need this walk because we call ReadStop on accepted connections when there's back pressure
                 // Calling ReadStop makes the handle as in-active which means the loop can
                 // end while there's still valid handles around. This makes loop.Dispose throw
                 // with an EBUSY. To avoid that, we walk all of the handles and dispose them.

src/Kestrel.Transport.Sockets/SocketTransport.cs

@@ -159,7 +159,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Transport.Sockets
                         }
                         catch (SocketException ex) when (ex.SocketErrorCode == SocketError.ConnectionReset)
                         {
-                            // REVIEW: Should there be a seperate log message for a connection reset this early?
+                            // REVIEW: Should there be a separate log message for a connection reset this early?
                             _trace.ConnectionReset(connectionId: "(null)");
                         }
                         catch (SocketException ex) when (!_unbinding)