fix: many typos

[mimikun]

Fix some typos.
Since this involves breaking changes such as changing the option name,
I think it would be better to leave the mistyped option name and mark it as deprecated in LuaLS.

e.g.

lua/haskell-tools/config/internal.lua

-- ....
              exception = true,
             },
           },
           ---@deprecated -- add it
           excplicitFixity = { globalOn = true },
           explicitFixity = { globalOn = true },
           gadt = { globalOn = true },
           ['ghcide-code-actions-bindings'] = { globalOn = true },
           ['ghcide-code-actions-fill-holes'] = { globalOn = true },
--- ....

e6e38c0

[github-actions]

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[mrcjkb]

Thanks 🙏

No need for the deprecation, as that typo is in the default hls config, not the user facing config.