remove build warning

Change-Id: I533d603ac1f073336eda99de57892ff5e12132d4
Reviewed-on: https://gerrit.libreoffice.org/15288Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Michael Stahl <mstahl@redhat.com>

offapi/com/sun/star/util/XNumberFormats.idl

@@ -154,7 +154,7 @@ published interface XNumberFormats: com::sun::star::uno::XInterface
             the thousands separator is shown or not
 
         @param bRed
-            show negative number in red colored if <TRUE/>
+            show negative number in red colored if `TRUE`
 
         @param nDecimals
             how many digits are shown after the decimal point