Fix schema.rdf -> schemaorg-current-http.rdf (#193)

Use version 9.0 instead of latest, hopefully that will reduce the
chance of URLs getting changed in the future.

Author: mr-c

_includes/cwl/17-metadata/metadata_example2.cwl

@@ -45,5 +45,5 @@ $namespaces:
   edam: http://edamontology.org/
 
 $schemas:
- - https://schema.org/version/latest/schema.rdf
+ - http://schema.org/version/9.0/schemaorg-current-http.rdf
  - http://edamontology.org/EDAM_1.18.owl

_includes/cwl/17-metadata/metadata_example3.cwl

@@ -52,5 +52,5 @@ $namespaces:
  edam: http://edamontology.org/
 
 $schemas:
- - https://schema.org/version/latest/schema.rdf
+ - http://schema.org/version/9.0/schemaorg-current-http.rdf
  - http://edamontology.org/EDAM_1.18.owl

_includes/cwl/19-custom-types/custom-types.cwl

@@ -58,7 +58,7 @@ $namespaces:
 
 $schemas:
   - http://edamontology.org/EDAM_1.16.owl
-  - https://schema.org/version/latest/schema.rdf
+  - http://schema.org/version/9.0/schemaorg-current-http.rdf
 
 s:license: https://spdx.org/licenses/Apache-2.0
 s:copyrightHolder: "EMBL - European Bioinformatics Institute"

_includes/cwl/20-software-requirements/custom-types.cwl

@@ -61,7 +61,7 @@ $namespaces:
  iana: https://www.iana.org/assignments/media-types/
  s: https://schema.org/
 $schemas:
- - https://schema.org/version/latest/schema.rdf
+ - http://schema.org/version/9.0/schemaorg-current-http.rdf
 
 s:license: https://spdx.org/licenses/Apache-2.0
 s:copyrightHolder: "EMBL - European Bioinformatics Institute"