changed table format (added -'s)

index.bs

@@ -483,7 +483,7 @@ When discussing IIIF implementation with a supplier, you will want to ensure tha
 The following table shows several Collection Management Systems and image servers and their *self reported* support of IIIF APIs. Specific compliance levels are not stated.
 
 | Software (supplier) | IIIF Presentation API | IIIF Image API |
-|--|--|--|
+| ------------------- | --------------------- | -------------- |
 | ContentDM (OCLC) | V | V |
 | Memorix (Vitec) | 3 |  2 | 
 | MAIS (DE REE archiefsystemen) | X |  X |