fix: right issue link to upstream issue on lfx blog post (#303)

Signed-off-by: Jonathan Gonzalez V. <jonathan.abdiel@gmail.com> c320299

Author: gbartolini

blog/lfx-cncf-mentorship/index.html

@@ -184,7 +184,7 @@ <h6 class="flex gap-2 text-sm charcoal">
 <h2 id="implementing-declarative-management-of-postgresql-foreign-data-wrappers">Implementing “Declarative Management of PostgreSQL Foreign Data Wrappers”</h2>
 <p>The project we proposed aims to extend the CloudNativePG operator to support
 declarative configuration of foreign data wrappers through its Database custom
-resource (<a href="http://cloudnative-pg/cloudnative-pg#4683">Upstream Issue</a>).
+resource (<a href="https://github.com/cloudnative-pg/cloudnative-pg/issues/4683">Upstream Issue</a>).
 PostgreSQL supports the SQL/MED (Management of External Data) specification,
 enabling access to external data sources through standard SQL queries. These
 sources—known as foreign data—are accessed via foreign data wrappers (FDWs),