docs: fix typo in nginx.conf (#1169)

Author: TC-MO

nginx.conf

@@ -299,7 +299,7 @@ server {
   rewrite ^/platform/actors/development/source-code$             /platform/actors/development/deployment/source-types redirect;
 
   # Rename output schema to dataset schema
-  rewrite ^/platform/actors/development/actors-definition/output-schema$ /platform/actors/development/actors-definition/dataset-schema permanent;
+  rewrite ^/platform/actors/development/actor-definition/output-schema$ /platform/actors/development/actor-definition/dataset-schema permanent;
   rewrite ^academy/deploying-your-code/output-schema$ /academy/deploying-your-code/dataset-schema permanent;
 
   # Removed pages