Fix hugo server call (#398)

* Fix hugo server call

* fix command

Co-authored-by: Matthias Bussonnier <bussonniermatthias@gmail.com>

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Co-authored-by: Brigitta Sipőcz <b.sipocz@gmail.com>
Co-authored-by: Matthias Bussonnier <bussonniermatthias@gmail.com>

Author: 3 people

Makefile

@@ -50,7 +50,7 @@ serve: prepare calendars ## serve the website
 	@hugo --printI18nWarnings server
 
 serve-dev: prepare calendars
-	@hugo --printI18nWarnings --disableFastRender server
+	@hugo --printI18nWarnings server --disableFastRender
 
 clean:
 	rm -rf public content/calendars/*.ics