docs: update contributor docs nav (#6149)

- update contributor docs nav
- fix a broken link

Author: marissahuysentruyt

CONTRIBUTOR-DOCS/02_style-guide/02_typescript/08_component-types.md

@@ -16,14 +16,14 @@
 - [Naming conventions](#naming-conventions)
     - [Constant prefixes](#constant-prefixes)
     - [Type names](#type-names)
-    - [S1-only suffixing rule](#s1-only-suffixing-rule)
+    - [Naming rule](#naming-rule)
 - [File structure](#file-structure)
     - [Section order](#section-order)
     - [Section separators](#section-separators)
 - [Constant patterns](#constant-patterns)
     - [Sizes](#sizes)
     - [Variants with S1/S2 split](#variants-with-s1s2-split)
-    - [Variants without S1/S2 split](#variants-without-s1s2-split)
+    - [Simple variant arrays](#simple-variant-arrays)
     - [Static colors](#static-colors)
     - [Non-variant constants](#non-variant-constants)
 - [Type derivation patterns](#type-derivation-patterns)

CONTRIBUTOR-DOCS/03_project-planning/01_objectives-and-strategy.md

@@ -19,7 +19,7 @@
     - [Continually improve components](#continually-improve-components)
 - [Strategy](#strategy)
     - [Disruptive vs. non-disruptive change](#disruptive-vs-non-disruptive-change)
-    - [Side-by-side development of 1st-gen and 2nd-gen](#side-by-side-development-of-1st-gen-and-2nd-gen)
+    - [Independent development of 1st-gen and 2nd-gen](#independent-development-of-1st-gen-and-2nd-gen)
 
 </details>
 

CONTRIBUTOR-DOCS/03_project-planning/02_workstreams/02_2nd-gen-component-migration/02_step-by-step/01_washing-machine-workflow.md

@@ -15,7 +15,7 @@
 - [Quick Migration Checklist](#quick-migration-checklist)
 - [Relationship to this workstream](#relationship-to-this-workstream)
 - [Workflow overview](#workflow-overview)
-- [Refactor path (1st-gen required)](#refactor-path-1st-gen-required)
+- [Starting from 1st-gen (reference, not dependency)](#starting-from-1st-gen-reference-not-dependency)
 - [Core vs SWC: where does code go?](#core-vs-swc-where-does-code-go)
 - [Phase 1: Preparation](#phase-1-preparation)
     - [What to do](#what-to-do)
@@ -30,7 +30,7 @@
 - [Phase 3: API migration](#phase-3-api-migration)
     - [What to do](#what-to-do)
     - [Property migration scenarios](#property-migration-scenarios)
-    - [API patterns (statics, warnings, and 1st-gen exports)](#api-patterns-statics-warnings-and-1st-gen-exports)
+    - [API patterns (statics and warnings)](#api-patterns-statics-and-warnings)
     - [What to check](#what-to-check)
     - [Common problems and solutions](#common-problems-and-solutions)
     - [Quality gate](#quality-gate)
@@ -125,7 +125,7 @@ Use this doc for **what order** to do things and **what to check**; use the link
 | **7. Documentation** | **Step 7: Add stories for 2nd-gen component** + JSDoc and usage docs. |
 | **8. Review** | (No dedicated step — this guide adds checklist and PR.) |
 
-Follow [Refactor path (1st-gen required)](#refactor-path-1st-gen-required) and the linked step-by-step docs for Steps 2–3. If those steps are **already** done, start **Phase 2** at SWC package setup and the Phase 2 “What to do” list.
+Reference to guide to [understand the 1st-gen component structure](../02_step-by-step/02_factor-rendering-out-of-1st-gen-component.md) and the linked step-by-step docs for Steps 2–3. If those steps are **already** done, start **Phase 2** at SWC package setup and the Phase 2 “What to do” list.
 
 ---
 

CONTRIBUTOR-DOCS/03_project-planning/02_workstreams/02_2nd-gen-component-migration/README.md

@@ -15,8 +15,8 @@
 - Step By Step
     - [Analyze rendering and styling](02_step-by-step/01_analyze-rendering-and-styling/README.md)
     - [Washing machine: migrating an existing 1st-gen component to 2nd-gen](02_step-by-step/01_washing-machine-workflow.md)
-    - [Factor rendering out of 1st-gen component](02_step-by-step/02_factor-rendering-out-of-1st-gen-component.md)
-    - [Move base class to 2nd-gen core](02_step-by-step/03_move-base-class-to-2nd-gen-core.md)
+    - [Understand the 1st-gen component structure](02_step-by-step/02_factor-rendering-out-of-1st-gen-component.md)
+    - [Create base class in 2nd-gen core](02_step-by-step/03_move-base-class-to-2nd-gen-core.md)
     - [Formalize Spectrum data model](02_step-by-step/04_formalize-spectrum-data-model.md)
     - [Add 2nd-gen SWC component](02_step-by-step/05_implement-2nd-gen-component.md)
     - [Migrate rendering & styles from Spectrum CSS](02_step-by-step/06_migrate-rendering-and-styles.md)