fix: update husky pre-commit hook with proper shebang (#39)

Author: chiragmak10

.husky/pre-commit

@@ -0,0 +1,5 @@
+if git rev-parse --verify HEAD >/dev/null 2>&1; then
+  node node_modules/lint-staged/bin/lint-staged.js
+else
+  node node_modules/lint-staged/bin/lint-staged.js --diff="--cached"
+fi