Update docs.json

Move memap to tools at engineering's request.

Author: Amanda Butler

docs.json

@@ -50,10 +50,6 @@
                         "type": "markdown",
                         "url": "https://github.com/ARMmbed/Handbook/blob/new_engine/docs/reference/runtime/static_memory_optimization.md"
                     },
-                    {
-                        "type": "markdown",
-                        "url": "https://github.com/ARMmbed/Handbook/blob/new_engine/docs/reference/runtime/memap.md"
-                    },
                     {
                         "type": "markdown",
                         "url": "https://github.com/ARMmbed/Handbook/blob/new_engine/docs/reference/runtime/Execution.md"
@@ -831,6 +827,10 @@
                     {
                         "type": "markdown",
                         "url": "https://github.com/ARMmbed/Handbook/blob/new_engine/docs/tools/debug/local_debugging_toolchain.md"
+                    },
+                    {
+                        "type": "markdown",
+                        "url": "https://github.com/ARMmbed/Handbook/blob/new_engine/docs/tools/debug/memap.md"
                     }
                 ]
             },