chore: npm pkg fix package.json files

Author: artus9033

packages/brownie/package.json

@@ -4,7 +4,7 @@
   "license": "MIT",
   "author": "Oskar Kwaśniewski <oskarkwasniewski@icloud.com>",
   "bin": {
-    "brownfield": "./lib/commonjs/scripts/brownfield.js"
+    "brownfield": "lib/commonjs/scripts/brownfield.js"
   },
   "contributors": [
     "Artur Morys-Magiera <artus9033@gmail.com>",

packages/cli/package.json

@@ -4,7 +4,7 @@
   "license": "MIT",
   "author": "Artur Morys-Magiera <artus9033@gmail.com>",
   "bin": {
-    "brownfield": "./dist/main.js"
+    "brownfield": "dist/main.js"
   },
   "type": "module",
   "contributors": [

packages/react-native-brownfield/package.json

@@ -4,7 +4,7 @@
   "license": "MIT",
   "author": "Michal Chudziak <mike.chudziak@callstack.com>",
   "bin": {
-    "brownfield": "./lib/commonjs/scripts/brownfield.js"
+    "brownfield": "lib/commonjs/scripts/brownfield.js"
   },
   "contributors": [
     "Piotr Drapich <piotr.drapich@callstack.com>"