Remove redundant reference to ServiceIO in placeholder configuration check

Author: NonSwag

content/docs/serviceio/guide/placeholders.mdx

@@ -116,4 +116,4 @@ current-bank: "Your current bank: %serviceio_bank%"
   5. There is no typo in the placeholder and it is properly used (`%serviceio_<placeholder>%`)
 </Callout>
 
-If a placeholder shows the literal placeholder text instead of the expected value, check your ServiceIO configuration and ensure the appropriate service providers are properly installed and configured.
+If a placeholder shows the literal placeholder text instead of the expected value, check your configuration and ensure the appropriate service providers are properly installed and configured.