Update documentation

wawa.TwitchPlays/Documentation/InstructionCore.Flatten(IEnumerable{Instruction}).md

@@ -19,4 +19,8 @@ This instance of [System.Collections.Generic.IEnumerable<>](https://docs.m
 #### Returns
 [System.Collections.Generic.IEnumerator<](https://docs.microsoft.com/en-us/dotnet/api/System.Collections.Generic.IEnumerator-1 'System.Collections.Generic.IEnumerator`1')[System.Object](https://docs.microsoft.com/en-us/dotnet/api/System.Object 'System.Object')[>](https://docs.microsoft.com/en-us/dotnet/api/System.Collections.Generic.IEnumerator-1 'System.Collections.Generic.IEnumerator`1')  
 An [System.Collections.Generic.IEnumerator<>](https://docs.microsoft.com/en-us/dotnet/api/System.Collections.Generic.IEnumerator-1 'System.Collections.Generic.IEnumerator`1') of [System.Object](https://docs.microsoft.com/en-us/dotnet/api/System.Object 'System.Object') that is friendly to be used for coroutines,  
-containing the values from [that](InstructionCore.Flatten(IEnumerable{Instruction}).md#Wawa.TwitchPlays.Domains.InstructionCore.Flatten(thisSystem.Collections.Generic.IEnumerable_Wawa.TwitchPlays.Domains.Instruction_).that 'Wawa.TwitchPlays.Domains.InstructionCore.Flatten(this System.Collections.Generic.IEnumerable<Wawa.TwitchPlays.Domains.Instruction>).that').
+containing the values from [that](InstructionCore.Flatten(IEnumerable{Instruction}).md#Wawa.TwitchPlays.Domains.InstructionCore.Flatten(thisSystem.Collections.Generic.IEnumerable_Wawa.TwitchPlays.Domains.Instruction_).that 'Wawa.TwitchPlays.Domains.InstructionCore.Flatten(this System.Collections.Generic.IEnumerable<Wawa.TwitchPlays.Domains.Instruction>).that').
+
+### Remarks
+
+The caller is responsible for disposing the returned enumerator.