Here are a few ways to rewrite the title in a formal, academic tone, depending on your focus:

• Option 1 (Direct and authoritative): Beyond Platform Governance: Addressing the Challenge of Authoritarian Disinformation
• Option 2 (Comprehensive): The Limitations of Platform Governance in Countering Authoritarian Disinformation
• Option 3 (Strategic): A Multi-Dimensional Approach to Countering Authoritarian Disinformation Beyond Platform Regulation

Recommendation: “Beyond Platform Governance: Addressing the Challenge of Authoritarian Disinformation” is the most standard and professional choice for academic or policy-oriented writing.

Here is a more formal version of the title:

Nigerian Authorities Issue Warning Against the Dissemination of Ebola-Related Misinformation

Here are a few options for a formal revision:

• Addressing Misinformation Regarding the Talbot Street Mosque Arson Attack
• An Analysis of Misinformation Concerning the Talbot Street Mosque Arson
• Clarifying the Facts: The Talbot Street Mosque Arson Incident

Recommendation: The first option is the most professional and standard for formal reporting.