Add resource for trust building (#8300)

Added details about the trust equation to trust/influence in theengineering-manager roadmap

src/data/roadmaps/engineering-manager/content/trust--influence-building@7PBmYoSmIgZT21a2Ip3_S.md

@@ -5,3 +5,7 @@ Building trust and influence is crucial for any Engineering Manager. This involv
 One challenge in this area is building trust between team members of varying experiences and skills. Managers must not only show the team they're competent, but also that they value everyone's inputs. They can achieve this by promoting inclusivity and praising team contributions regularly.
 
 Being patient, communicate clearly, and showing empathy are critical skills that can help an Engineering Manager in trust and influence building. By embodying these traits, managers can build a stronger, united, and more effective engineering team.
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+Visit the following resources to learn more:
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+- [@article@Understanding The Trust Equation](https://trustedadvisor.com/why-trust-matters/understanding-trust/understanding-the-trust-equation)