chore: replace the word "unittest" to "unit test"

It is said that "unittest" is not a word, but a Python module name.

Update workflow job name, package.json script name, and some comments in
the codebase.

.github/workflows/ci.yml

@@ -11,8 +11,8 @@ on:
   workflow_dispatch:
 
 jobs:
-  unittests:
-    name: Run unittests
+  unit-test:
+    name: Run unit tests
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
@@ -23,10 +23,10 @@ jobs:
         with:
           version: ^9.7.0
           run_install: true
-      - run: pnpm unittest
+      - run: pnpm test:unit-test
   upload-test:
     name: Run upload test
-    needs: unittests
+    needs: unit-test
     if: ${{ github.event_name == 'push' && github.ref == 'refs/heads/main' }}
     runs-on: ubuntu-latest
     steps:
@@ -46,7 +46,7 @@ jobs:
   publish:
     name: Publish action
     needs:
-      - unittests
+      - unit-test
       - upload-test
     if: ${{ github.event_name == 'push' && github.ref == 'refs/heads/main' }}
     runs-on: ubuntu-latest

package.json

@@ -12,8 +12,8 @@
   "scripts": {
     "build": "pnpm clean && pnpm transpile && cp action.yml dist",
     "transpile": "esbuild src/index.ts --platform=node --target=node20 --minify --bundle --outfile=dist/index.cjs",
-    "test": "pnpm unttest && pnpm test:upload",
-    "unittest": "vitest --silent",
+    "test": "pnpm test:unit-test && pnpm test:upload",
+    "test:unit-test": "vitest --silent",
     "test:upload": "pnpm clean && pnpm transpile:test:upload && node -r dotenv/config dist/test/upload.cjs dotenv_config_path=test/.env.local",
     "transpile:test:upload": "esbuild test/upload.ts --platform=node --target=node20 --minify --bundle --outfile=dist/test/upload.cjs",
     "lint": "eslint src --fix",

test/.env.example

@@ -1,4 +1,4 @@
-# Copy this file to .env.local and `pnpm test` to run unittest.
+# Copy this file to .env.local and `pnpm test:unit=test` to run unit tests.
 TEST_ADDON_GUID=your-addon-guid
 TEST_JWT_ISSUER=your-jwt-issuer
 TEST_JWT_SECRET=your-jwt-secret