document fixes for the cache section (#782)

docs/pages/docs/features/caching.mdx

@@ -90,11 +90,11 @@ Luckily, you can control `turbo`'s cache fingerprinting (a.k.a. hashing) behavio
   "$schema": "https://turborepo.org/schema.json",
   "pipeline": {
     "build": {
-      "dependsOn": {
-        "^build"
-        // env vars will impact hashes of all "build" tasks
-        "$SOME_ENV_VAR"
-      },
+      "dependsOn": [
+        "^build",
+          // env vars will impact hashes of all "build" tasks
+          "$SOME_ENV_VAR",
+      ],
       "outputs": ["dist/**"]
     },
     "web#build": { // override settings for the "build" task for the "web" app
@@ -120,9 +120,9 @@ Luckily, you can control `turbo`'s cache fingerprinting (a.k.a. hashing) behavio
   },
   "baseBranch": "origin/main",
   "globalDependencies": [
-    "$GITHUB_TOKEN"// env var that will impact the hashes of all tasks,
-    "tsconfig.json" // file contents will impact the hashes of all tasks,
-    ".env.*" // glob file contents will impact the hashes of all tasks,
+    "$GITHUB_TOKEN",// env var that will impact the hashes of all tasks,
+    "tsconfig.json", // file contents will impact the hashes of all tasks,
+    ".env.*", // glob file contents will impact the hashes of all tasks,
   ]
 }
 ```