Move PostgreSQL-Integration document to a proper URL

resolved https://github.com/abpframework/abp/issues/2408

docs/cs/docs-nav.json

@@ -264,7 +264,7 @@
           "items": [
             {
               "text": "PostgreSQL integrace",
-              "path": "Best-Practices/PostgreSQL-Integration.md"
+              "path": "EntityFrameworkCore-PostgreSQL-Integration.md"
             }
           ]
         },

docs/en/docs-nav.json

@@ -265,7 +265,7 @@
           "items": [            
             {
               "text": "PostgreSQL Integration",
-              "path": "Best-Practices/PostgreSQL-Integration.md"
+              "path": "EntityFrameworkCore-PostgreSQL-Integration.md"
             }
           ]
         },

docs/pt-BR/docs-nav.json

@@ -249,7 +249,7 @@
           "items": [
             {
               "text": "Integração do PostgreSQL",
-              "path": "Best-Practices/PostgreSQL-Integration.md"
+              "path": "EntityFrameworkCore-PostgreSQL-Integration.md"
             }
           ]
         },

docs/zh-Hans/docs-nav.json

@@ -254,7 +254,7 @@
           "items": [            
             {
               "text": "PostgreSQL 集成",
-              "path": "Best-Practices/PostgreSQL-Integration.md"
+              "path": "EntityFrameworkCore-PostgreSQL-Integration.md"
             }
           ]
         },