Minor fix

README.md

@@ -489,7 +489,7 @@ In particular, note that [vLLM does not yet support function calling](https://gi
 
 <details>
 <summary>Trusting custom Certificate Authority (CA) certificate</summary>
-If your llm provider url uses a certificate from a custom CA, in order to trust it, base-64 encode the certificate, and store it in an environment variable named ``CERTIFICATE``
+If your llm provider url uses a certificate from a custom CA, in order to trust it, base-64 encode the certificate, and store it in an environment variable named <b>CERTIFICATE</b>
 </details>
 
 ### Enabling Integrations