Remove erroneous formatting.

Author: brycelelbach

execution.bs

@@ -1670,7 +1670,7 @@ object, obtainable from a receiver with a `get_env` accessor. In R6, the
 sender queries are given similar treatment, relocating to a "attributes"
 object obtainable from a sender with a `get_attrs` accessor. This was done
 to solve a number of design problems with the `split` and `ensure_started`
-algorithms; _e.g._, see
+algorithms; e.g., see
 [NVIDIA/stdexec#466](https://github.com/NVIDIA/stdexec/issues/466).
 
 Schedulers, however, remain directly queryable. As lightweight handles