Fix link to sessions file in src/schema/objects/top_level_files.yaml

src/schema/objects/top_level_files.yaml

@@ -104,7 +104,7 @@ samples:
     -   `pathology`: string value describing the pathology of the sample or type of control.
         When different from `healthy`, pathology SHOULD be specified in `samples.tsv`.
         The pathology MAY instead be specified in
-        [Sessions files](06-longitudinal-and-multi-site-studies.md#sessions-file) in case it changes over time.
+        [Sessions files](../03-modality-agnostic-files.md#sessions-file) in case it changes over time.
 
     -   `derived_from`: `sample-<label>` key/value pair from which a sample is derived from,
         for example a slice of tissue (`sample-02`) derived from a block of tissue (`sample-01`)