docs: update html_context with PyAnsys tags (#902)

Author: pyansys-automation

doc/source/conf.py

@@ -329,3 +329,8 @@ def reset_servers(gallery_conf, fname, when):
 
 # A list of files that should not be packed into the epub file.
 epub_exclude_files = ["search.html"]
+
+# PyAnsys tags configuration
+html_context = {
+    "pyansys_tags": ['Structures']
+}