增加CUDA和C技能树互相推荐

data/recommend/skill_tree.json

@@ -16,7 +16,8 @@
     ],
     "c": [
         "python",
-        "algorithm"
+        "algorithm",
+        "cuda"
     ],
     "java": [
         "pg",
@@ -43,5 +44,8 @@
     "vue": [
         "gml",
         "python"
+    ],
+    "cuda": [
+        "c"
     ]
 }
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