Improve \ in string literal to show both effects

[adamyakes]

Summary

The existing example shows that the backslash removes the newline character in the string, however the string literal still (technically unnecessarily) de-indents the beginning of the next line of code to the first column.

I have an intermediate amount of F# experience, but I come across this syntax rarely and skimmed the docs to jog my memory. I saw the code example and the way it was formatted implied to me that the \ wouldn't strip the leading whitespace on the next line if it were there.

I think it would be clearer to show two nearly identical string literals, without and with the backslash, and call out that the former includes both the newline and leading spaces, while the latter has neither.

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docs/fsharp/language-reference/strings.md	Strings

[adamyakes]

@dotnet-policy-service agree