Fixed dead link (#662)

* Update intro.md

* Update intro.md

* Update intro.md

* Update intro.md

* Update intro.md

* Update intro.md

* Update intro.md

docs/guides/getting_started/intro.md

@@ -211,7 +211,7 @@ For your reference, you may view the [completed program].
 # Building a bot with commands
 
 This section will show you how to write a program that is ready for
-[commands](commands.md). Note that this will not be explaining _how_
+[commands](commands/commands.md). Note that this will not be explaining _how_
 to write commands or services, it will only be covering the general
 structure.
 
@@ -224,4 +224,4 @@ should be to separate the program (initialization and command handler),
 the modules (handle commands), and the services (persistent storage,
 pure functions, data manipulation).
 
-**todo:** diagram of bot structure
+**todo:** diagram of bot structure