Update microdraw.js

the 'slice' parameter in fileID is currently the display name, it should be the slice index. The regex was appropriately made to handle only numbers, which works when the slice index is used to make a default display name (see line ~2050). I'm patching it to recover the complete string.

app/public/js/microdraw.js

@@ -1326,7 +1326,13 @@ const Microdraw = (function () {
       const regions = me._convertDBAnnotationsToRegions(data);
 
       if (data.length) {
-        const match = data[0].fileID.match(/slice=(\d+)/);
+        /** @todo: the 'slice' parameter in fileID is currently the display name,
+        it should be the slice index. The regex was appropriately made to handle
+        only numbers, which works when the slice index is used to make a default
+        display name (see line ~2050). I'm patching it to recover the complete
+        string.
+        */
+        const match = data[0].fileID.match(/slice=(.+)/);
 
         if (!match) {
           throw new Error("Annotation fileID does not have a slice number indicated");