Fix Hugo warnings

Signed-off-by: Kévin Commaille <zecakeh@tedomum.fr>

config.toml

@@ -10,15 +10,16 @@ enableRobotsTXT = true
 # We disable RSS, because (a) it's useless, (b) Hugo seems to generate broken
 # links to it when used with a --baseURL (for example, https://spec.matrix.org/v1.4/
 # contains `<link rel="alternate" type="application/rss&#43;xml" href="/v1.4/v1.4/index.xml">`).
-disableKinds = ["taxonomy", "taxonomyTerm", "RSS"]
+disableKinds = ["taxonomy", "RSS"]
 
 [languages]
 [languages.en]
 title = "Matrix Specification"
-description = "Home of the Matrix specification for decentralised communication"
 languageName ="English"
 # Weight used for sorting.
 weight = 1
+[languages.en.params]
+description = "Home of the Matrix specification for decentralised communication"
 
 # Entries in the main menu in the header.
 [menus]