Update 1.4 Security practices and documentation.md

Deleting double "is" in ## What is a security policy?

Author: Trogloduck

1.4 Security practices and documentation.md

@@ -29,7 +29,7 @@ These terms are often used in the context of cybersecurity to define different l
 
 ## What is a security policy?
 
-A security policy is a high-level document that outlines an organization's overarching security goals, principles, and guidelines. It provides a framework for making security-related decisions and sets the tone for the organization's security posture. Security policies typically cover topics such as acceptable use of resources, data protection, access control, incident response, and more. A policy is is solution and technology independent. An example of a security policy that many would be familiar with would be an organization’s acceptable use policy.
+A security policy is a high-level document that outlines an organization's overarching security goals, principles, and guidelines. It provides a framework for making security-related decisions and sets the tone for the organization's security posture. Security policies typically cover topics such as acceptable use of resources, data protection, access control, incident response, and more. A policy is solution and technology independent. An example of a security policy that many would be familiar with would be an organization’s acceptable use policy.
 
 ## What is a security standard?