Update package.json

Use proper scope.

package.json

@@ -1,5 +1,5 @@
 {
-  "name": "@theoryofnekomata/oblique-strategies-core",
+  "name": "@modal-sh/oblique-strategies-core",
   "version": "0.0.0",
   "types": "dist/types/index.d.ts",
   "main": "dist/cjs/production/index.js",