[V3] Translation Service: fix everything around this exercise #1071 (#1096)

Author: SleeplessByte

.eslintignore

@@ -1,2 +1,5 @@
 
 !.meta
+
+/exercises/**/global.d.ts
+/exercises/**/env.d.ts

concepts/promises/introduction.md

@@ -2,5 +2,3 @@
 
 The `Promise` object represents the eventual completion (or failure) of an
 asynchronous operation, and its resulting value.
-
-https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Using_promises

concepts/promises/links.json

@@ -1 +1,6 @@
-[]
+[
+  {
+    "url": "https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Using_promises",
+    "description": "MDN: Using promises"
+  }
+]

config.json

@@ -157,7 +157,7 @@
         "status": "beta"
       },
       {
-        "slug": "promises",
+        "slug": "translation-service",
         "name": "Translation Service",
         "uuid": "4a967656-8615-474e-a009-5c0b09f4386f",
         "concepts": ["promises"],