Add test case

Author: sandersn

tests/baselines/reference/quickInfoForJSDocCodefence.baseline

@@ -53,5 +53,60 @@
         }
       ]
     }
+  },
+  {
+    "marker": {
+      "fileName": "/tests/cases/fourslash/quickInfoForJSDocCodefence.ts",
+      "position": 129
+    },
+    "quickInfo": {
+      "kind": "function",
+      "kindModifiers": "",
+      "textSpan": {
+        "start": 127,
+        "length": 3
+      },
+      "displayParts": [
+        {
+          "text": "function",
+          "kind": "keyword"
+        },
+        {
+          "text": " ",
+          "kind": "space"
+        },
+        {
+          "text": "boo",
+          "kind": "functionName"
+        },
+        {
+          "text": "(",
+          "kind": "punctuation"
+        },
+        {
+          "text": ")",
+          "kind": "punctuation"
+        },
+        {
+          "text": ":",
+          "kind": "punctuation"
+        },
+        {
+          "text": " ",
+          "kind": "space"
+        },
+        {
+          "text": "string",
+          "kind": "keyword"
+        }
+      ],
+      "documentation": [],
+      "tags": [
+        {
+          "name": "example",
+          "text": "``\n1 + 2\n`"
+        }
+      ]
+    }
   }
 ]

tests/cases/fourslash/quickInfoForJSDocCodefence.ts

@@ -9,4 +9,13 @@
 ////function fo/*1*/o() {
 ////    return '2';
 ////}
+/////**
+//// * @example
+//// * ``
+//// * 1 + 2
+//// * `
+//// */
+////function bo/*2*/o() {
+////    return '2';
+////}
 verify.baselineQuickInfo();