Set date for CF-1.10

cf-conventions.adoc

@@ -1,7 +1,7 @@
 include::version.adoc[]
 = NetCDF Climate and Forecast (CF) Metadata Conventions
 Brian{nbsp}Eaton; Jonathan{nbsp}Gregory; Bob{nbsp}Drach; Karl{nbsp}Taylor; Steve{nbsp}Hankin; Jon{nbsp}Blower; John{nbsp}Caron; Rich{nbsp}Signell; Phil{nbsp}Bentley; Greg{nbsp}Rappa; Heinke{nbsp}Höck; Alison{nbsp}Pamment; Martin{nbsp}Juckes; Martin{nbsp}Raspaud; Randy{nbsp}Horne; Timothy{nbsp}Whiteaker; David{nbsp}Blodgett; Charlie{nbsp}Zender; Daniel{nbsp}Lee; David{nbsp}Hassell; Alan{nbsp}D.{nbsp}Snow; Tobias{nbsp}Kölling; Dave{nbsp}Allured; Aleksandar{nbsp}Jelenak; Anders{nbsp}Meier{nbsp}Soerensen; Lucile{nbsp}Gaultier; Sylvain{nbsp}Herlédan
-Version {current-version}, 10 September, 2021
+Version {current-version}, 31 August, 2022
 :doctype: book
 :pdf-folio-placement: physical
 :sectanchors: