improve rendering of docs in hover #1050

Job	Run time
static analysis (Elixir 1.15.x \| Erlang/OTP 25.x)	30s
mix test windows (Elixir 1.13.x \| Erlang/OTP 22.x)	7m 52s
mix test (Elixir 1.13.x \| Erlang/OTP 22.x)	5m 36s
mix test windows (Elixir 1.13.x \| Erlang/OTP 23.x)	8m 24s
mix test (Elixir 1.13.x \| Erlang/OTP 23.x)	6m 28s
mix test windows (Elixir 1.13.x \| Erlang/OTP 24.x)	6m 47s
mix test (Elixir 1.13.x \| Erlang/OTP 24.x)	5m 45s
mix test windows (Elixir 1.13.x \| Erlang/OTP 25.x)	7m 29s
mix test (Elixir 1.13.x \| Erlang/OTP 25.x)	4m 0s
mix test windows (Elixir 1.14.x \| Erlang/OTP 23.x)	8m 26s
mix test (Elixir 1.14.x \| Erlang/OTP 23.x)	7m 37s
mix test windows (Elixir 1.14.x \| Erlang/OTP 24.x)	6m 21s
mix test (Elixir 1.14.x \| Erlang/OTP 24.x)	4m 35s
mix test windows (Elixir 1.14.x \| Erlang/OTP 25.x)	5m 26s
mix test (Elixir 1.14.x \| Erlang/OTP 25.x)	3m 55s
mix test windows (Elixir 1.15.x \| Erlang/OTP 24.x)	6m 50s
mix test (Elixir 1.15.x \| Erlang/OTP 24.x)	5m 35s
mix test windows (Elixir 1.15.x \| Erlang/OTP 25.x)	5m 44s
mix test (Elixir 1.15.x \| Erlang/OTP 25.x)	4m 7s
	1h 51m 27s

Provide feedback