fix mistakes

sample/metaballs/meta.ts

@@ -1,6 +1,6 @@
 export default {
   name: 'Metaballs',
-  description: `This example shows a simple game made with WebGPU.
+  description: `This example shows an implementation of metaballs with WebGPU.
 
 Source at https://github.com/toji/webgpu-metaballs/
 `,

sample/pristineGrid/meta.ts

@@ -1,5 +1,5 @@
 export default {
-  name: 'Spookyball',
+  name: 'Pristine Grid',
   description: `A simple WebGPU implementation of the "Pristine Grid" technique described in this wonderful little blog post: https://bgolus.medium.com/the-best-darn-grid-shader-yet-727f9278b9d8.
 
 Source at https://github.com/toji/pristine-grid-webgpu/