Add Excel-only disclaimer to WebAsyncWrapper

Author: timhall

src/WebAsyncWrapper.cls

@@ -13,7 +13,7 @@ Attribute VB_Exposed = True
 '
 ' Wrapper WebClient and WebRequest that enables callback-style async requests
 '
-' _Note_ Windows-only and requires reference to "Microsoft WinHTTP Services, version 5.1"
+' _Note_ Windows-only and Excel-only and requires reference to "Microsoft WinHTTP Services, version 5.1"
 '
 ' Errors:
 ' 11050 / 80042b2a / -2147210454 - Client should not be changed

src/WebHelpers.bas

@@ -915,8 +915,6 @@ Public Function Base64Decode(Encoded As Variant) As String
 #End If
 End Function
 
-''
-
 ''
 ' Register custom converter for converting request `Body` and response `Content`.
 ' If the `ConvertCallback` or `ParseCallback` are object methods,