doc: manual page for knsec3hash

doc/conf.py

@@ -223,6 +223,7 @@ latex_domain_indices = False
 # (source start file, name, description, authors, manual section).
 man_pages = [
     ('reference', 'knot.conf', 'Knot DNS configuration file', author, 5),
+    ('utils_knsec3hash', 'knsec3hash', "Simple utility to compute NSEC3 hash", author, 1),
 ]
 
 # If true, show URL addresses after external links.

doc/index.rst

@@ -14,4 +14,5 @@ Welcome to Knot DNS's documentation!
    running
    troubleshooting
    reference
+   utilities
    migration

doc/utilities.rst

+:. _Utilities:
+
+Utilities
+=========
+
+Knot DNS comes with a few DNS client utilities and a few utilities to control
+the server. This section collects manual pages for these utilities.
+
+.. toctree::
+   :maxdepth: 1
+
+   man_knsec3hash