Update standards/src11-security-information/README.md

Co-authored-by: Cameron Carstens <[email protected]>

standards/src11-security-information/README.md

@@ -30,7 +30,7 @@ This function takes no input parameters and returns a struct containing contact
 - This function MUST return accurate and up to date information.
 - This function MAY not return the optional parameters.
 - This function MUST return at least one item in the `contact_information` field's `Vec`. Furthermore, the string should follow the following format `<contact_type>:<contact_information>`.
-- This function MUST NOT return any empty strings. Optional parameters must return `None` if it is unnecessary.
+- This function MUST NOT return any empty strings. Optional parameters MUST return `None` if it is unnecessary.
 - This function MUST return atleast one item in the `preferred_languages`, if it is not `None`. Furthurmore, the string should only contain the `ISO 639-1` language code and nothing else.
 - This function MAY return a link or the information directly for the following fields: `project_url`, `policy`, `encryption`, `source_code`, `auditors`, `acknowledgements`, `additional_information`.
 - This function MUST return the information directly for the following fields: `name`, `contact_information`, `preferred_languages`, `source_release`, and `source_revision`.