fix the spellings of properties in thumbnail viewer

Author: tony-xlh

_articles/info/api/WebTwain_Viewer.md

@@ -592,7 +592,7 @@ var thumbnailViewerSettings = {
     allowResizing: false,
     pageBackground: "transparent",
     pageBorder: "1px solid rgb(238, 238, 238)",
-    hoverBackground: "rgb(239, 246, 253)",
+    hoverPageBackground: "rgb(239, 246, 253)",
     hoverPageBorder: "1px solid rgb(238, 238, 238)",
     placeholderBackground: "rgb(251, 236, 136)",
     selectedPageBorder: "1px solid rgb(125,162,206)",

_articles/info/api/interfaces.md

@@ -1151,13 +1151,13 @@ interface ThumbnailViewer {
      * 'Invalid property value' will be reported when the specified value type is wrong or the parameter name is spelled incorrectly.
      * Allow any CSS rules
      */
-    hoverBackground: string;
+    hoverPageBackground: string;
     /**
      * Set the image border when the mouse is hovered.
      * 'Invalid property value' will be reported when the specified value type is wrong or the parameter name is spelled incorrectly.
      * Allow any CSS rules
      */
-    hoverBorder: string;
+    hoverPageBorder: string;
     /**
      * Set the background when dragging the image. The default value is yellow.
      * 'Invalid property value' will be reported when the specified value type is wrong or the parameter name is spelled incorrectly.
@@ -1169,13 +1169,13 @@ interface ThumbnailViewer {
      * 'Invalid property value' will be reported when the specified value type is wrong or the parameter name is spelled incorrectly.
      * Allow any CSS rules
      */
-    selectedImageBorder: string;
+    selectedPageBorder: string;
     /**
      * Set the background of the selected image.
      * 'Invalid property value' will be reported when the specified value type is wrong or the parameter name is spelled incorrectly.
      * Allow any CSS rules
      */
-    selectedImageBackground: string;
+    selectedPageBackground: string;
 }
 ```