Fixed errored links

README.md

@@ -10,7 +10,7 @@ as well as rules for how tools should treat HED-annotated data.
 
 If you want to annotate your data, please visit the [**HED resources**](https://www.hed-resources.org/en/latest/index.html) documentation website. 
 If you are a developer of a new HED vocabulary (schema) please see the
-[Schema development guide](https://www.hed-resources.org/en/latest/HedSchemaDevelopmentGuide.html).
+[Schema development guide](https://www.hed-resources.org/en/latest/HedSchemaDevelopersGuide.html).
 
 The latest version of the HED specification is available at the
 [**HED specification**](https://hed-specification.readthedocs.io/en/latest/index.html).

docs/source/08_HED_ontology.md

@@ -60,7 +60,11 @@ This HED information space is illustrated schematically in the following diagram
 
 The embedding is anchored by the `hedId` schema attribute introduced with HED standard schema 8.3.0.
 The `hedId` values are of the form `HED_xxxxxxx` and resolve to IRIs (International Resource Identifiers) 
-of the form *https://purl.org/hed/HED_xxxxxxx*.
+in the [**https://purl.org/hed/hed.owl**](https://purl.org/hed/hed.owl) file.
+This file is currently hosted on GitHub and does not have a mechanism to address individual IDs defined within the file.
+The ontology files are versioned by release date.
+Releases are located in the [**releases**](https://github.com/hed-standard/hed-ontology/tree/main/releases)
+subdirectory of the [**hed-ontology**](https://github.com/hed-standard/hed-ontology) repository on GitHub.
 
 The extended information space is completely represented by the HED ontology in OWL format.
 In this document we use OWL Manchester format (`.omn`) for readability.  
@@ -679,4 +683,4 @@ using the range assignments described in the following table.
 ### 8.3.3. HED IRIs
 
 HED IRIs [(**International Resource Identifiers**)](https://datatracker.ietf.org/doc/html/rfc3987) are mapped
-to [**https://purl.org/hed**](https://purl.org/hed).
+to [**https://purl.org/hed/hed.owl**](https://purl.org/hed/hed.owl).

docs/source/Appendix_A.md

@@ -901,7 +901,7 @@ The `HED` node is the root node of the XML schema.
 
 The file name corresponding to this example is `HED8.0.0.xml`.
 The file is found in the [**standard_schema/hedxml**](https://github.com/hed-standard/hed-schemas/tree/main/standard_schema/hedxml)
-directory of the [**hed-schemas**](https://github.com/hed-standard/hedschemas) GitHub repository.
+directory of the [**hed-schemas**](https://github.com/hed-standard/hed-schemas) GitHub repository.
 
 Library schemas must include the `library` attribute with the library name
 in their header line as shown in the following example.

docs/source/_template/layout.html

@@ -7,14 +7,14 @@
     </p>
     <ul>
       <li class="toctree-li">
-        <a href="https://hedtags.org">Project homepage</a></li>
+        <a href="https://www.hedtags.org">Project homepage</a></li>
       <li class="toctree-li">
         <a href="https://www.youtube.com/channel/UCYu8B1eFb-gRemamXod-exQ">HED YouTube channel</a></li>
       <li class="toctree-li">
-        <a href="https://hed-examples.readthedocs.io/en/latest/DocumentationSummary.html">Documentation summary</a></li>
+        <a href="https://www.hed-resources.org/en/latest/DocumentationSummary.html">Documentation summary</a></li>
       <li class="toctree-li">
         <a href="https://hed-specification.readthedocs.io/en/latest/index.html">Specification</a></li>
-      <li class="toctree-li"><a href="https://hedtools.ucsd.edu/hed">Online tools</a></li>
+      <li class="toctree-li"><a href="https://hedtools.org/hed">Online tools</a></li>
       <li class="toctree-li"><a href="https://hed-python.readthedocs.io/en/latest/">HEDTools API</a></li>
       <li class="toctree-li"><a href="https://hed-web.readthedocs.io/en/latest/">Web deployment</a></li>
     </ul>