Fix vacancy notification guide images (#246)

* Change vacancy notification guide images

* fix minor UI

Author: peng-u-0807

SNUTT-2022/SNUTT/Assets/Assets.xcassets/Images/VacancyGuides/vacancy.guide1.imageset/vacancyModal1.png

@@ -1,6 +1,7 @@
 {
   "images" : [
     {
+      "filename" : "vacancyModal2.png",
       "idiom" : "universal",
       "scale" : "1x"
     },
@@ -11,11 +12,12 @@
           "value" : "dark"
         }
       ],
+      "filename" : "vacancyModal2D.png",
       "idiom" : "universal",
       "scale" : "1x"
     },
     {
-      "filename" : "Group 166@2x.png",
+      "filename" : "vacancyModal2@2x.png",
       "idiom" : "universal",
       "scale" : "2x"
     },
@@ -26,12 +28,12 @@
           "value" : "dark"
         }
       ],
-      "filename" : "export!!!@2x.png",
+      "filename" : "vacancyModal2D@2x.png",
       "idiom" : "universal",
       "scale" : "2x"
     },
     {
-      "filename" : "Group 166@3x.png",
+      "filename" : "vacancyModal2@3x.png",
       "idiom" : "universal",
       "scale" : "3x"
     },
@@ -42,7 +44,7 @@
           "value" : "dark"
         }
       ],
-      "filename" : "export!!!@3x.png",
+      "filename" : "vacancyModal2D@3x.png",
       "idiom" : "universal",
       "scale" : "3x"
     }