[ocamlformat]: trim option/value

[huwaireb]

My bad, forgot to trim the values to support spaced cases

e.g

version =  0.24.1

[bors[bot]]

Build succeeded:

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• check testConfigGeneration [x86_64-linux]
• check testEmptyConfig [x86_64-linux]
• check testWrapper [x86_64-linux]
• Evaluate flake.nix