[relnotes] Formatting.

README/ReleaseNotes/v618/index.md

@@ -82,9 +82,9 @@ Added necessary changes to allow [XRootD local redirection](https://github.com/x
   - PyROOT: add `AsNumpy` method to export contents of a RDataFrame as a dictionary of numpy arrays
 
 ### TLeafF16 and TLeafD32
-  - New leaf classes allowing to store Float16_t and Double32_t values using the truncation methods from TBuffer
+  - New leaf classes allowing to store `Float16_t` and `Double32_t` values using the truncation methods from `TBuffer`
     (See for example `TBuffer::WriteDouble32`)
-  - The new types can be specified using the type characters 'f' (Float16_t) and 'd' (Double32_t)
+  - The new types can be specified using the type characters `'f'` (`Float16_t`) and `'d'` (`Double32_t`)
   - It is also possible to specify a range and a number of bits to be stored using the syntax from `TStreamerElement::GetRange`.
     Therefore the range and bits specifier has to be attached to the type character.
   - All functionalities of the other datatypes have been reimplemented.