docs: update code block syntax in CONTRIBUTING.md and refine dev dependencies in pyproject.toml

Author: wu-vincent

CONTRIBUTING.md

@@ -50,7 +50,7 @@ conan profile detect
 
 **Windows:**
 
-```bash
+```shell
 conan install . --build=missing -s compiler.cppstd=20 -c tools.cmake.cmaketoolchain:generator=Ninja
 ```
 
@@ -64,13 +64,13 @@ conan install . --build=missing -s compiler.cppstd=20 -s compiler.libcxx=libc++
 
 **Windows (cmd):**
 
-```cmd
+```shell
 .\build\Release\generators\conanbuild.bat
 ```
 
 **Windows (PowerShell):**
 
-```powershell
+```shell
 .\build\Release\generators\conanbuild.ps1
 ```
 

pyproject.toml

@@ -47,8 +47,7 @@ dependencies = [
 dynamic = ["version"]
 
 [project.optional-dependencies]
-test = ["pytest"]
-dev = ["endstone-stubgen"]
+dev = ["endstone-stubgen", "pytest"]
 
 [project.urls]
 Changelog = "https://endstone.readthedocs.io/en/latest/changelog"