docs: fix migration 3.x h3SetToMultiPolygon typo
@@ -168,4 +168,4 @@ the passed-in cell.
| *DNE* | `boundaryToLoop` | |
| `getH3UnidirectionalEdgeBoundary` | `directedEdgeToBoundary` | returns `CellBoundary` |
| `h3SetToLinkedGeo` | `cellsToLinkedMultiPolygon` | returns `LinkedGeoPolygon` |
-| `h3SetToToMultiPolygon` | `cellsToMultiPolygon` | bindings only |
\ No newline at end of file
+| `h3SetToMultiPolygon` | `cellsToMultiPolygon` | bindings only |
