chore(doc): fix TOC entries

developer/wip/for-contributors/contributor-handbook.md

@@ -16,16 +16,16 @@
     * [2.6 Service layers](#26-service-layers)
     * [2.7 Policy Monitor](#27-policy-monitor)
     * [2.8 Protocol extensions (DSP)](#28-protocol-extensions-dsp)
-  * [3. (Postgre-)SQL persistence](#3-postgre-sql-persistence)
+    * [3. (Postgre-)SQL persistence](#3-postgre-sql-persistence)
   * [4. The data plane](#4-the-data-plane)
     * [4.1 Data plane signaling](#41-data-plane-signaling)
-    * [4.2 Data plane self-registration](#42-data-plane-self-registration)
-    * [4.3 Public API authentication](#43-public-api-authentication)
-    * [4.4 Writing a custom data plane extension (sink/source)](#44-writing-a-custom-data-plane-extension-sinksource)
-    * [4.5 Writing a custom data plane (using only DPS)](#45-writing-a-custom-data-plane-using-only-dps)
+    * [4.2 Writing a custom data plane extension (sink/source)](#42-writing-a-custom-data-plane-extension-sinksource)
+    * [4.3 Writing a custom data plane (using only DPS)](#43-writing-a-custom-data-plane-using-only-dps)
   * [5. Development best practices](#5-development-best-practices)
     * [5.1 Writing Unit-, Component-, Integration-, Api-, EndToEnd-Tests](#51-writing-unit--component--integration--api--endtoend-tests)
-    * [5.1 Other best practices](#51-other-best-practices)
+    * [5.1 Coding best practices](#51-coding-best-practices)
+    * [5.2 Testing best practices](#52-testing-best-practices)
+    * [5.3 Other best practices](#53-other-best-practices)
   * [6. Further concepts](#6-further-concepts)
     * [6.2 Autodoc](#62-autodoc)
     * [6.3 Adapting the Gradle build](#63-adapting-the-gradle-build)

developer/wip/for-contributors/control-plane/json-ld.md

@@ -1,13 +1,11 @@
 # JSON-LD in EDC
 
 <!-- TOC -->
-
 * [JSON-LD in EDC](#json-ld-in-edc)
-    * [1. JSON-LD in EDC](#1-json-ld-in-edc)
-    * [1.1 Compact IRI](#11-compact-iri)
-    * [1.2 Custom Remote Context](#12-custom-remote-context)
-        * [1.1 JSON-LD Validation](#11-json-ld-validation)
-
+  * [1. JSON-LD in EDC](#1-json-ld-in-edc)
+  * [1.1 Compact IRI](#11-compact-iri)
+  * [1.2 Custom Remote Context](#12-custom-remote-context)
+    * [1.1 JSON-LD Validation](#11-json-ld-validation)
 <!-- TOC -->
 
 Here is a simple example taken from [json-ld.org](https://json-ld.org)

developer/wip/for-contributors/control-plane/programming-primitives.md

@@ -1,22 +1,20 @@
 # Programming Primitives
 
 <!-- TOC -->
-
 * [Programming Primitives](#programming-primitives)
-    * [1 State machines](#1-state-machines)
-        * [1.1 Batch-size, sorting and tick-over timeout](#11-batch-size-sorting-and-tick-over-timeout)
-        * [1.2 Database-level locking](#12-database-level-locking)
-    * [2. Transformers](#2-transformers)
-        * [2.1 Basic Serialization and Deserialization](#21-basic-serialization-and-deserialization)
-        * [2.1 Transformer context](#21-transformer-context)
-        * [2.2 Segmented transformer registries](#22-segmented-transformer-registries)
-        * [2.3 Reporting transformation errors](#23-reporting-transformation-errors)
-    * [3. Token generation and decorators](#3-token-generation-and-decorators)
-    * [4. Token validation and rules](#4-token-validation-and-rules)
-        * [4.1 Public Key Resolvers](#41-public-key-resolvers)
-        * [4.2 Validation Rules](#42-validation-rules)
-        * [4.3 Validation Rules Registry](#43-validation-rules-registry)
-
+  * [1 State machines](#1-state-machines)
+    * [1.1 Batch-size, sorting and tick-over timeout](#11-batch-size-sorting-and-tick-over-timeout)
+    * [1.2 Database-level locking](#12-database-level-locking)
+  * [2. Transformers](#2-transformers)
+    * [2.1 Basic Serialization and Deserialization](#21-basic-serialization-and-deserialization)
+    * [2.1 Transformer context](#21-transformer-context)
+    * [2.2 Segmented transformer registries](#22-segmented-transformer-registries)
+    * [2.3 Reporting transformation errors](#23-reporting-transformation-errors)
+  * [3. Token generation and decorators](#3-token-generation-and-decorators)
+  * [4. Token validation and rules](#4-token-validation-and-rules)
+    * [4.1 Public Key Resolvers](#41-public-key-resolvers)
+    * [4.2 Validation Rules](#42-validation-rules)
+    * [4.3 Validation Rules Registry](#43-validation-rules-registry)
 <!-- TOC -->
 
 ## 1 State machines

developer/wip/for-contributors/control-plane/protocol-extensions.md

@@ -3,13 +3,12 @@
 <!-- TOC -->
 * [Protocol Extensions](#protocol-extensions)
   * [1. RemoteMessage](#1-remotemessage)
-    * [1.1 Delivering messages with RemoteMessageDispatcher](#11-delivering-messages-with-remotemessagedispatcher)   
-    * [1.2 Handling incoming messages with protocol services](#12-handling-incoming-messages-with-protocol-services)   
-  * [2. DSP protocol](#2-dsp-protocol-implementation)
+    * [1.1 Delivering messages with RemoteMessageDispatcher](#11-delivering-messages-with-remotemessagedispatcher)
+    * [1.2 Handling incoming messages with protocol services](#12-handling-incoming-messages-with-protocol-services)
+  * [2. DSP protocol implementation](#2-dsp-protocol-implementation)
     * [2.1 `RemoteMessage` handlers](#21-remotemessage-handlers)
     * [2.2 HTTP endpoints](#22-http-endpoints)
-    * [2.3 `RemoteMessage` transformers](#22-remotemessage-transformers)
-
+    * [2.2 `RemoteMessage` transformers](#22-remotemessage-transformers)
 <!-- TOC -->