Improve error with pointer to docs when PGlite is unable to load WASM binary

I'm getting an error when running a transaction in the browser. The function I'm running:

```ts
export const replaceSchema = (db: PGlite, schemaStr: SchemaString) => {
return db.transaction((tx) => {
tx.exec(`DROP SCHEMA public CASCADE;`);

return tx.exec(schemaStr);
});
};
```

The error:
```
Uncaught (in promise) RuntimeError: Aborted(CompileError: WebAssembly.instantiate(): expected magic word 00 61 73 6d, found 3c 21 64 6f @+0). Build with -sASSERTIONS for more info.
at abort (@electric-sql_pglite.js?v=74e038dd:461:
```