feat(EU Usage pages for components): update EU Usage pages for compon…

…ents “eu_radio” (#3677)

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src/website/src/pages/eu/components/forms/radio/docs/usage.md

@@ -9,7 +9,7 @@ Radio buttons provides a selection with two or more options. Only one option can
 - use labels as click targets (clicking the label will select that option)
 - group related fields
 - order logically (e.g. ages 18-25, ages 25-35, ages, 35-50, over 65)
-- indicate whether the input group isoptional - *if it's mandatory, have a neutral option (e.g. other, n/a) selected by default*
+- indicate whether the input group is optional - _if it's mandatory, have a neutral option (e.g. other, n/a) selected by default_
 - make use of helper text if there are further directions or hints the users may need in completing their goal
 - write specific and clear error messages, so users understand how to address the error
 
@@ -21,10 +21,10 @@ Radio buttons provides a selection with two or more options. Only one option can
 ## When to use
 
 - when you have under 10 items
-- when users need toselect options or toggle settings, for example
+- when users need to select options or toggle settings
 - in forms with multiple non-exclusive options (e.g. search filters)
 - only one selection can be made
 
 ## When not to use
 
-- avoid when more than one option can be selected - use checkboxes instead
+- avoid when more than one option can be selected - use [checkboxes](https://ec.europa.eu/component-library/eu/components/forms/checkbox/code/) or [multi-select](https://ec.europa.eu/component-library/eu/components/forms/select/code/) instead