[doctests] section requires too many things

[db48x]

$ ~/src/cppdoc/target/release/cppdoc build
Error reading config file: TOML parse error at line 12, column 1
   |
12 | [doctests]
   | ^^^^^^^^^^
missing field `run`

$ ~/src/cppdoc/target/release/cppdoc build
Error reading config file: TOML parse error at line 12, column 1
   |
12 | [doctests]
   | ^^^^^^^^^^
missing field `compiler_invocation`

I have enable = false specified, so it shouldn’t care what value I give for these options.

[rdmsr]

Thank you! This is was fixed.