fix metadata validation (#29)

Author: magicmark

gaps/GAP-13/metadata.yml

@@ -6,6 +6,8 @@ summary: >
   GraphQL executable document.
 status: proposal
 authors:
-  - "Benjie Gillam <code@benjiegillam.com>"
+  - name: "Benjie Gillam"
+    email: "code@benjiegillam.com"
+    githubUsername: "@benjie"
 sponsor: "@benjie"
 discussion: "https://github.com/graphql/gaps/pull/13"

package.json

@@ -12,7 +12,7 @@
     "suggest:format": "echo \"\nTo resolve this, run: $(tput bold)npm run format$(tput sgr0)\" && exit 1",
     "test:format": "prettier --check . || npm run suggest:format",
     "test:spelling": "cspell \"spec/**/*.md\" README.md LICENSE.md",
-    "test:structure": "find ./gaps -maxdepth 1 -type d -name 'GAP-*' -exec ./scripts/validate-structure.js {} \\;",
+    "test:structure": "find ./gaps -maxdepth 1 -type d -name 'GAP-*' | xargs -I{} ./scripts/validate-structure.js {}",
     "sync:codeowners": "node scripts/sync-codeowners.js"
   },
   "devDependencies": {