[Doc] Rename page titles (#20130)

Signed-off-by: DarkLight1337 <tlleungac@connect.ust.hk>

docs/contributing/incremental_build.md

-# Incremental Compilation Workflow for vLLM Development
+# Incremental Compilation Workflow
 
 When working on vLLM's C++/CUDA kernels located in the `csrc/` directory, recompiling the entire project with `uv pip install -e .` for every change can be time-consuming. An incremental compilation workflow using CMake allows for faster iteration by only recompiling the necessary components after an initial setup. This guide details how to set up and use such a workflow, which complements your editable Python installation.
 

docs/contributing/model/README.md

@@ -14,9 +14,9 @@ However, this can be more complex for models that include new operators (e.g., a
 
 Read through these pages for a step-by-step guide:
 
-- [Implementing a Basic Model](basic.md)
-- [Registering a Model to vLLM](registration.md)
-- [Writing Unit Tests](tests.md)
+- [Basic Model](basic.md)
+- [Registering a Model](registration.md)
+- [Unit Testing](tests.md)
 - [Multi-Modal Support](multimodal.md)
 
 !!! tip

docs/contributing/model/basic.md

 ---
-title: Implementing a Basic Model
+title: Basic Model
 ---
 [](){ #new-model-basic }
 

docs/contributing/model/registration.md

 ---
-title: Registering a Model to vLLM
+title: Registering a Model
 ---
 [](){ #new-model-registration }
 

docs/contributing/model/tests.md

 ---
-title: Writing Unit Tests
+title: Unit Testing
 ---
 [](){ #new-model-tests }