[Qt] rename "amount" to "requested amount" in receive coins table

src/qt/receivecoinsdialog.h

@@ -36,7 +36,7 @@ public:
     enum ColumnWidths {
         DATE_COLUMN_WIDTH = 130,
         LABEL_COLUMN_WIDTH = 120,
-        AMOUNT_MINIMUM_COLUMN_WIDTH = 160,
+        AMOUNT_MINIMUM_COLUMN_WIDTH = 180,
         MINIMUM_COLUMN_WIDTH = 130
     };