Update borvo.md. Corrected the structure and filled the section description...

Update borvo.md. Corrected the structure and filled the section description and molecular mechanisms.

content/3.defense-systems/borvo.md

@@ -22,10 +22,10 @@ relevantAbstracts:
 # Borvo
 
 ## Description
-Borvo is a single-gene anti-phage system that was identify through bioinformatic prediction and experimental validation :ref{10.1016/j.chom.2022.09.017}.
+Borvo is a single-gene anti-phage system that was identify through bioinformatic prediction and experimental validation :ref{doi=10.1016/j.chom.2022.09.017}.
 
 ## Molecular mechanisms
-Mutations in the phage DNA polymerase can allow phages to escape Borvo defense, indicating that it could be the trigger of the system :ref{10.1016/j.cell.2023.02.029}.Borvo is a suspected abortive infection :ref{10.1016/j.cell.2023.02.029}. However as far as we are aware, the precise molecular mechanism of Borvo is unknown.
+Mutations in the phage DNA polymerase can allow phages to escape Borvo defense, indicating that it could be the trigger of the system :ref{doi=10.1016/j.cell.2023.02.029}.Borvo is a suspected abortive infection :ref{doi=10.1016/j.cell.2023.02.029}. However as far as we are aware, the precise molecular mechanism of Borvo is unknown.
 
 ## Example of genomic structure