Changed "his" to "this"

Typically, you will want to mark his method as `async`, although it is 
not required. 

Changed `his` to `this`

docs/guides/commands.md

@@ -68,7 +68,7 @@ By now, your module should look like this:
 The next step to creating commands, is actually creating commands. 
 
 To create a command, add a method to your module of type `Task`. 
-Typically, you will want to mark his method as `async`, although it is 
+Typically, you will want to mark this method as `async`, although it is 
 not required. 
 
 Adding parameters to a command is done by adding parameters to the 
@@ -297,4 +297,4 @@ Otherwise, return `TypeReaderResult.FromError`.
 ### Installing TypeReaders
 
 TypeReaders are not automatically discovered by the Command Service, 
-and must be explicitly added. To install a TypeReader, invoke [CommandService.AddTypeReader](xref:Discord.Commands.CommandService#Discord_Commands_CommandService_AddTypeReader__1_Discord_Commands_TypeReader_).
+and must be explicitly added. To install a TypeReader, invoke [CommandService.AddTypeReader](xref:Discord.Commands.CommandService#Discord_Commands_CommandService_AddTypeReader__1_Discord_Commands_TypeReader_).