Update linter rule package

Now using fio-style v2.4.0, to include rule suggestion that catches
extra spaces between words and sentences.

QA: tested that vale was able to sync package.

No related open tasks/issues.

Signed-off-by: Katrina Prosise <katrina.prosise@foundries.io>

.vale.ini

@@ -2,7 +2,7 @@
 StylesPath = styles
 MinAlertLevel = suggestion
 
-Packages = https://github.com/foundriesio/fio-style/releases/download/v2.3.0/Fio-docs.zip
+Packages = https://github.com/foundriesio/fio-style/releases/download/v2.4.0/Fio-docs.zip
 
 # You can add different terms to either accept or reject by adding them to vocab.
 # This can be useful if you are using a new term or writing to a specific audience.