style(CourseDetailPage): 调整编辑按钮图标大小从12px到14px

@@ -165,7 +165,7 @@
               color="linear-gradient(to right, #3b82f6, #2563eb)"
               class="shadow-sm text-xs px-4 py-1.5 min-w-[80px] hover:shadow-md transition-all duration-200"
             >
-              <van-icon name="edit" size="12" class="mr-1" />
+              <van-icon name="edit" size="14" class="mr-1" />
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             </van-button>
           </div>