Revert "[RM] link causing link checker to fail" with tuned up URL

This reverts commit fb87411.

According to w3c/json-ld-syntax#343 (comment)
references should point to final published versions on
https://www.w3.org/TR/json-ld11/

src/03-modality-agnostic-files.md

@@ -281,7 +281,7 @@ Provenance is information about a file, including any metadata that is relevant
 
 Possible places to encode provenance
 
-**Dataset level provenance.** At the dataset level, provenance could be about the dataset itself, or about any entity in the dataset. This provenance may evolve as new data are added, which may include sourcedata, BIDS data, and BIDS derived data. One option is to make use of named-graphs.
+**Dataset level provenance.** At the dataset level, provenance could be about the dataset itself, or about any entity in the dataset. This provenance may evolve as new data are added, which may include sourcedata, BIDS data, and BIDS derived data. One option is to make use of [named-graphs](https://www.w3.org/TR/json-ld11/#named-graphs).
 
 In this example, with this `prov.jsonld` file we encode that the T1.mgz file was generated by version 6 of the FreeSurfer software.