updated smaller collections for manual

collections/developers/internals/internals.md

@@ -0,0 +1,19 @@
+<h1> Internals </h1>
+
+We present in this section of the developers book a partial list of system components. Content will be added progressively.
+
+<h2> Table of Contents </h2>
+
+- [Reliable Message Bus (RMB)](rmb/rmb_toc.md)
+  - [Introduction to RMB](rmb/rmb_intro.md)
+  - [RMB Specs](rmb/rmb_specs.md)
+  - [RMB Peer](rmb/uml/peer.md)
+  - [RMB Relay](rmb/uml/relay.md)
+
+- [ZOS](zos/index.md)
+  - [Manual](./zos/manual/manual.md)
+  - [Workload Types](./zos/manual/workload_types.md)
+  - [Internal Modules](./zos/internals/internals.md)
+  - [Capacity](./zos/internals/capacity.md)
+  - [Performance Monitor Package](./zos/performance/performance.md)
+  - [API](./zos/manual/api.md)