[Dev Deps] update ecmarkup, @tc39/ecma262-biblio

Author: ljharb

package.json

@@ -14,7 +14,7 @@
   },
   "license": "MIT",
   "devDependencies": {
-    "@tc39/ecma262-biblio": "^2.1.2390",
-    "ecmarkup": "^14.1.1"
+    "@tc39/ecma262-biblio": "^2.1.2571",
+    "ecmarkup": "^17.0.0"
   }
 }

spec.emu

@@ -18,6 +18,6 @@ contributors: Your Name(s) Here
       1. Let _stage_ be *0*<sub>ℤ</sub>.
     1. Else,
       1. Let _stage_ be *-1*<sub>ℤ</sub>.
-    1. Return ? ToString(_proposal_).
+    1. Return ? ToString(_stage_).
   </emu-alg>
 </emu-clause>