Missing rule documentation

[gotbadger]

A quick search using:

grep -rnw './pkg/commands/process/settings/rules' -e 'TODO'

Show we are missing documation (TODO) in the following rules:

• ./pkg/commands/process/settings/rules/javascript/express/external_file_upload.yml @elsapet
• ./pkg/commands/process/settings/rules/javascript/lang/dangerous_insert_html.yml @elsapet
• ./pkg/commands/process/settings/rules/javascript/react/dangerously_set_inner_html.yml @elsapet
• ./pkg/commands/process/settings/rules/ruby/lang/regex_using_user_input.yml @elsapet
• ./pkg/commands/process/settings/rules/ruby/lang/path_using_user_input.yml @elsapet
• ./pkg/commands/process/settings/rules/ruby/lang/deserialization_of_user_input.yml @elsapet
• ./pkg/commands/process/settings/rules/ruby/lang/eval_using_user_input.yml @elsapet
• ./pkg/commands/process/settings/rules/ruby/lang/ftp_using_user_input.yml @elsapet
• ./pkg/commands/process/settings/rules/ruby/rails/session_key_using_user_input.yml @elsapet