scaffolder: apply review fixes

Co-authored-by: Johan Haals <johan.haals@gmail.com>
Co-authored-by: Fredrik Adelöw <freben@gmail.com>
Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

plugins/scaffolder-common/package.json

@@ -5,6 +5,7 @@
   "main": "src/index.ts",
   "types": "src/index.ts",
   "license": "Apache-2.0",
+  "private": false,
   "publishConfig": {
     "access": "public",
     "main": "dist/index.esm.js",
@@ -14,10 +15,9 @@
   "repository": {
     "type": "git",
     "url": "https://github.com/backstage/backstage",
-    "directory": "plugin/scaffolder-common"
+    "directory": "plugins/scaffolder-common"
   },
   "keywords": [
-    "techdocs",
     "scaffolder"
   ],
   "files": [