done changes in package.json file

Author: SB-priyankap

packages/plugin-network-instrumentation/package.json

@@ -1,14 +1,14 @@
 {
   "name": "@bugsnag/plugin-network-instrumentation",
   "version": "8.8.1",
-  "main": "./dist/cjs/network-instrumentation.ts",
-  "module": "./dist/esm/network-instrumentation.ts",
+  "main": "./dist/cjs/network-instrumentation.js",
+  "module": "./dist/esm/network-instrumentation.js",
   "types": "./dist/cjs/network-instrumentation.d.ts",
   "exports": {
     ".": {
       "import": {
         "types": "./dist/esm/network-instrumentation.d.ts",
-        "default": "./dist/esm/network-instrumentation.ts"
+        "default": "./dist/esm/network-instrumentation.js"
       },
       "require": {
         "types": "./dist/cjs/network-breadcrumbs.d.ts",