fix(examples): fix itk-wasm run argument passing

Remove extra `--`.

Author: thewtex

examples/different-input-types/package.json

@@ -7,8 +7,8 @@
     "build": "npm run build:wasi",
     "build:wasi": "itk-wasm -b wasi-build -i itkwasm/wasi:latest-debug build",
     "test": "npm run test:wasi && npm run test:wasi:help",
-    "test:wasi": "itk-wasm -b wasi-build run different-input-types.wasi.wasm -- -- ./Gourds.png label.png overlay.png",
-    "test:wasi:help": "itk-wasm -b wasi-build run different-input-types.wasi.wasm -- -- --help"
+    "test:wasi": "itk-wasm -b wasi-build run different-input-types.wasi.wasm -- ./Gourds.png label.png overlay.png",
+    "test:wasi:help": "itk-wasm -b wasi-build run different-input-types.wasi.wasm -- --help"
   },
   "author": "Matt McCormick <matt@mmmccormick.com>",
   "license": "Apache-2.0",

examples/hello-pipeline/package.json

@@ -5,9 +5,9 @@
   "type": "module",
   "scripts": {
     "build": "itk-wasm -i itkwasm/wasi build",
-    "test": "itk-wasm run wasi-build/hello-pipeline.wasi.wasm -- -- cthead1.png",
-    "test:quiet": "itk-wasm run wasi-build/hello-pipeline.wasi.wasm -- -- --quiet cthead1.png",
-    "test:help": "itk-wasm run wasi-build/hello-pipeline.wasi.wasm -- -- --help"
+    "test": "itk-wasm run wasi-build/hello-pipeline.wasi.wasm -- cthead1.png",
+    "test:quiet": "itk-wasm run wasi-build/hello-pipeline.wasi.wasm -- --quiet cthead1.png",
+    "test:help": "itk-wasm run wasi-build/hello-pipeline.wasi.wasm -- --help"
   },
   "author": "Matt McCormick <matt@mmmccormick.com>",
   "license": "Apache-2.0",