remove references to git submodules from DEVELOPMENT.md

DEVELOPMENT.md

@@ -40,14 +40,7 @@ Use `cargo build --all-targets` to build the project.
 Some tests run against the existing Node.js implementation of the Apollo Router. This
 requires that the `federation-demo` project is running. 
 
-First, initialize and update required git submodules. 
-
-```
-git submodule init
-git submodule update
-```
-
-Then, start the service: 
+Start the service: 
 
 ```
 docker-compose up -d

NEXT_CHANGELOG.md

@@ -28,13 +28,13 @@ By [@USERNAME](https://github.com/USERNAME) in https://github.com/apollographql/
 ## ❗ BREAKING ❗
 ## 🚀 Features
 
-### Add support for dhat based heap profiling [PR #1829](https://github.com/apollographql/router/pull/1829))
+### Add support for dhat based heap profiling ([PR #1829](https://github.com/apollographql/router/pull/1829))
 
 [dhat-rs](https://github.com/nnethercote/dhat-rs) provides [DHAT](https://www.valgrind.org/docs/manual/dh-manual.html) style heap profiling. We have added two compile features, dhat-heap and dhat-ad-hoc, which leverage this ability.
 
 By [@garypen](https://github.com/garypen) in https://github.com/apollographql/router/pull/1829
 
-### Add `trace_id` in logs to identify all logs related to a specific request [Issue #1981](https://github.com/apollographql/router/issues/1981))
+### Add `trace_id` in logs to identify all logs related to a specific request ([Issue #1981](https://github.com/apollographql/router/issues/1981))
 
 It automatically adds a `trace_id` on logs to identify which log is related to a specific request. Also adds `apollo_trace_id` in response headers to help the client to identify logs for this request.
 
@@ -54,7 +54,7 @@ Example of logs in JSON:
 
 By [@bnjjj](https://github.com/bnjjj) in https://github.com/apollographql/router/pull/1982
 
-### Reload the configuration when receiving the SIGHUP signal [Issue #35](https://github.com/apollographql/router/issues/35))
+### Reload the configuration when receiving the SIGHUP signal ([Issue #35](https://github.com/apollographql/router/issues/35))
 
 This adds support for reloading configuration when receiving the SIGHUP signal. This only works on unix-like platforms,
 and only with the configuration file.
@@ -63,7 +63,7 @@ By [@Geal](https://github.com/Geal) in https://github.com/apollographql/router/p
 
 ## 🐛 Fixes
 
-### Fix the deduplication logic in deduplication caching [Issue #1984](https://github.com/apollographql/router/issues/1984))
+### Fix the deduplication logic in deduplication caching ([Issue #1984](https://github.com/apollographql/router/issues/1984))
 
 Under load, it is possible to break the router deduplication logic and leave orphaned entries in the waiter map. This fixes the logic to prevent this from occurring.
 
@@ -77,7 +77,7 @@ The Uplink API returns actionable info in its responses:
 
 By [@Geal](https://github.com/Geal) in https://github.com/apollographql/router/pull/2001
 
-### Fix the rhai SDL print function [Issue #2005](https://github.com/apollographql/router/issues/2005))
+### Fix the rhai SDL print function ([Issue #2005](https://github.com/apollographql/router/issues/2005))
 
 A recent change to the way we provide the SDL to plugins broke the rhai SDL print. This fixes it.
 
@@ -95,16 +95,23 @@ By [@Geal](https://github.com/Geal) in https://github.com/apollographql/router/p
 
 ## 🛠 Maintenance
 
-### Apply tower best practice to inner service cloning [PR #2030](https://github.com/apollographql/router/pull/2030))
+### Apply tower best practice to inner service cloning ([PR #2030](https://github.com/apollographql/router/pull/2030))
 
 Our service readiness checking can be improved by following tower project recommendations for cloning inner services.
 
 By [@garypen](https://github.com/garypen) in https://github.com/apollographql/router/pull/2030
 
-### Split the configuration file management in multiple modules [Issue #1790](https://github.com/apollographql/router/issues/1790))
+### Split the configuration file management in multiple modules ([Issue #1790](https://github.com/apollographql/router/issues/1790))
 
 The file is becoming large and hard to modify.
 
 By [@Geal](https://github.com/Geal) in https://github.com/apollographql/router/pull/1996
 
 ## 📚 Documentation
+
+### Remove references to git submodules from DEVELOPMENT.md ([Issue #2012](https://github.com/apollographql/router/issues/2012))
+
+We don't need instructions about submodules since #1856. Let's remove them.
+
+By [@garypen](https://github.com/garypen) in https://github.com/apollographql/router/pull/2045
+