Update 02-folder-as-crate-root.md - fix appendix link for ro-crate spec

Author: marshallmcdonnell

episodes/02-folder-as-crate-root.md

@@ -67,7 +67,7 @@ used in the rest of the RO-Crate document.
 These will largely map to definitions in the [schema.org](http://schema.org/) vocabulary,
 which can be used by RO-Crate extensions to provide additional metadata beyond the RO-Crate specifications.
 It is this feature of JSON-LD that helps make RO-Crate extensible for many different purposes
--- this is explored further in the specification's [appendix on JSON-LD](https://www.researchobject.org/ro-crate/1.2/appendix/jsonld.html).
+-- this is explored further in the specification's [appendix on JSON-LD](https://www.researchobject.org/ro-crate/specification/1.2/appendix/jsonld.html).
 In short, only JSON keys (_properties_) and types defined this way can be used within the RO-Crate Metadata Document.
 
 However, in the general case it should be sufficient to follow the RO-Crate JSON examples directly without deeper JSON-LD understanding.
@@ -88,4 +88,4 @@ specify which entities can be added to the `@graph` array.
 - RO-Crate uses schema.org as base vocabulary
 - The JSON-LD context enables optional Linked Data processing
 - Descriptions are listed flatly as entities in the @graph array
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