Linkage for REPR and Plugins

Author: blueshank-gh

docs/platforms/garrysmod/modules/plugins.md

@@ -1,6 +1,9 @@
 # Plugins
 BSA plugins are toggleable feature modules that register themselves with `BSA.Plugins:add(...)` and then participate in a managed lifecycle.
 
+!!! info
+	See [core/modules/plugins.lua](https://github.com/Buildstruct/bsa-platform-gmod/blob/develop/lua/bsa/core/modules/plugins.lua) for the actual design implementation.
+
 - See [Creating a Plugin](plugins/creating.md) for the practical authoring guide.
 - See [Plugin Runtime Reference](plugins/reference.md) for loader behavior, lifecycle, sync, and the manager API.
 

docs/platforms/garrysmod/modules/repr.md

@@ -1,6 +1,9 @@
 # Repr
 Structured colored text representation system used by BSA for readable value formatting, console/chat/interface output, and networked message delivery.
 
+!!! info
+	See [core/libraries/repr.lua](https://github.com/Buildstruct/bsa-platform-gmod/blob/develop/lua/bsa/core/libraries/repr.lua) and [core/modules/repr.lua](https://github.com/Buildstruct/bsa-platform-gmod/blob/develop/lua/bsa/core/modules/repr.lua) for the actual design implementation.
+
 `repr` is defined in two layers:
 
 - `libraries/repr.lua`: value conversion, serialization, and construction of `Color`/`string` expression arrays.