Fix escaping of docstring in `@__DIR__` (#53225)
This issue was introduced in #52442.
The markdown parser had issues with the triple-quotes.
Usually you can use quadruple-quotes to fix this, but
this does not appear to be supported, so we escape
each with backslash.
Here is the corrected docstring rendered:
```julia-repl
help?> @__DIR__
@__DIR__ -> String
Macro to obtain the absolute path of the current directory as a string.
If in a script, returns the directory of the script containing the @__DIR__ macrocall. If run from a REPL or if
evaluated by julia -e <expr>, returns the current working directory.
Example
≡≡≡≡≡≡≡
The example illustrates the difference in the behaviors of @__DIR__ and pwd(), by creating a simple script in a
different directory than the current working one and executing both commands:
julia> cd("/home/JuliaUser") # working directory
julia> # create script at /home/JuliaUser/Projects
open("/home/JuliaUser/Projects/test.jl","w") do io
print(io, """
println("@__DIR__ = ", @__DIR__)
println("pwd() = ", pwd())
""")
end
julia> # outputs script directory and current working directory
include("/home/JuliaUser/Projects/test.jl")
@__DIR__ = /home/JuliaUser/Projects
pwd() = /home/JuliaUser
```
