Updates to wording for various --help options about wordfence-cli

[davidnuzik]

4bbd7b0 11/20/23 Testing with my own local build just prior to rc rather than WITH the RC as this is extremely low risk. I'm getting a head start on testing for this case since it's very unlikely something changes in any significant way that affects/breaks help in this area for malware-scan.

SUMMARY:
QA validation PASSED.

VALIDATION STEPS

• Run wordfence malware-scan --help and observe the changes:
  • --read-stdin now does not include "Specify --no-read-stdin to disable." which was previously at the end of the first line.
  • --output now does not include "Use --no-output to disable." which was previously at the end of the first line.
  • --output-headers now reads "Include column headers on output" which previously read "Whether or not to include column headers in output."
  • --cache now reads "Enable caching. Caching is enabled by default." which previously read "Whether or not to enable the cache."
    • Check each of wordfence, wordfence configure --help, and wordfence version --help as the issue suggested. They are all the same and look good.
    • Technically, this wording is not per the criteria in the issue but I like it better -- it reads better in my opinion and makes sense.
• Run wordfence vuln-scan --help and observe the changes:
  • -I, --informational now reads "Includes informational vulnerability records in results.". Previously it read "Whether or not to include informational vulnerability records in results."
    • Technically, the criteria indicates to also include "Defaults to disabled." but we don't do this for other flags that are not enabled by default. I think this is fine.
  • -M, --relative-mu-plugins-path Now reads "Alternate path of the wp-content/mu-plugins directory relative to the WordPress root" Previously the "mu-" was missing at "[...]wp-content/plugins[...]"
• Test again but by invoking help in different ways i.e. wordfence help, wordfence -h, and --help - all should be the same. (I also have some test automation for this step and will check prior to release).

NOTES:

      --read-stdin             Read paths from stdin. If not specified, paths will automatically be read from stdin when input is not from a TTY.
                               (use --no-read-stdin to disable)

      --output                 Write results to stdout. This is the default behavior when --output-path is not specified.
                               (use --no-output to disable)

      --output-headers         Include column headers in output.
                               Compatible formats: csv, tsv, null-delimited, line-delimited
                               (use --no-output-headers to disable)

      --cache                  Enable caching. Caching is enabled by default.
                               (use --no-cache to disable)

  -I, --informational             Include informational vulnerability records in results.
                                  (use --no-informational to disable)

  -M, --relative-mu-plugins-path  Alternate path of the wp-content/mu-plugins directory relative to the WordPress root.