chore: update classroom data

Author: qwerzl

data/classroom/classroom.json

@@ -41,7 +41,7 @@
   },
   {
     "name": "C308",
-    "alias": "大教室",
+    "alias": "音乐教室",
     "size": 38
   },
   {
@@ -51,7 +51,7 @@
   },
   {
     "name": "B201",
-    "alias": "音乐教室",
+    "alias": "原音乐教室",
     "size": 16
   },
   {
@@ -101,12 +101,12 @@
   },
   {
     "name": "C304",
-    "alias": "",
+    "alias": "美术室",
     "size": 0
   },
   {
     "name": "C307",
-    "alias": "",
+    "alias": "美术室",
     "size": 0
   },
   {
@@ -148,5 +148,10 @@
     "name": "教工休息室旁乒乓桌",
     "alias": "",
     "size": 0
+  },
+  {
+    "name": "C305",
+    "alias": "中教室",
+    "size": 20
   }
 ]