Update author/topics/inline_markup/semantic-elements.adoc

Co-authored-by: Suleman Uzair <[email protected]>

author/topics/inline_markup/semantic-elements.adoc

@@ -138,7 +138,7 @@ in the Metanorma flavour. That includes the flavour's specifications, where defi
 for grouping digits, for decimal points, and for precision. Where these are not specified,
 the defaults for the document language are used, as specified in the https://github.com/twitter/twitter-cldr-rb[twitter-cldr-rb] gem.
 
-NOTE: The number in the `stem:[]` expression must be specified according to the en-US locale;
+NOTE: The number in the `\stem:[]` expression must be specified according to the en-US locale;
 `30000.54` is recognised as a decimal number, `30 000,54` is not. However, if the document is in French,
 `stem:[30000.54]` will in fact be rendered consistent with French practice, as _30 000,54_.