index.rst: add missing RFC 31 description

grondo · grondo · commit fa8fdf1cf96d · 2022-04-05T11:27:17.000-07:00
Problem: RFC 31 is listed in the index toctree, but a link to it is
missing in the general descriptive index.

Add the missing description of RFC 31 to the index.
diff --git a/index.rst b/index.rst
@@ -216,6 +216,12 @@ This specification describes the Flux implementation of the Hostlist Format
 
 This specification describes the Flux job urgency parameter.
 
+:doc:`31/Job Constraints Specification <spec_31>`
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+This specification describes an extensible format for the description of
+job constraints.
+
 .. Each file must appear in a toctree
 .. toctree::
    :hidden:
