Fixing some words

ru/preface.md

@@ -33,13 +33,13 @@
 	- 5.4. [PostgreSQL](05.4.md)
 	- 5.5. [Develop ORM based on beedb](05.5.md)
 	- 5.6. [NoSQL database](05.6.md)
-	- 5.7. [Summary](05.7.md)
+	- 5.7. [Итоги раздела](05.7.md)
 - 6.[Data storage and session](06.0.md)
 	- 6.1. [Session and cookies](06.1.md)
 	- 6.2. [How to use session in Go](06.2.md)
 	- 6.3. [Session storage](06.3.md)
 	- 6.4. [Prevent hijack of session](06.4.md)
-	- 6.5. [Summary](06.5.md)
+	- 6.5. [Итоги раздела](06.5.md)
 - 7.[Text files](07.0.md)
 	- 7.1. [XML](07.1.md)
 	- 7.2. [JSON](07.2.md)
@@ -47,13 +47,13 @@
 	- 7.4. [Templates](07.4.md)
 	- 7.5. [Files](07.5.md)
 	- 7.6. [Strings](07.6.md)
-	- 7.7. [Summary](07.7.md)
+	- 7.7. [Итоги раздела](07.7.md)
 - 8.[Web services](08.0.md)
 	- 8.1. [Sockets](08.1.md)
 	- 8.2. [WebSocket](08.2.md)
 	- 8.3. [REST](08.3.md)
 	- 8.4. [RPC](08.4.md)
-	- 8.5. [Summary](08.5.md)
+	- 8.5. [Итоги раздела](08.5.md)
 - 9.[Security and encryption](09.0.md)
 	- 9.1. [CSRF attacks](09.1.md)
 	- 9.2. [Filter inputs](09.2.md)
@@ -61,30 +61,30 @@
 	- 9.4. [SQL injection](09.4.md)
 	- 9.5. [Password storage](09.5.md)
 	- 9.6. [Encrypt and decrypt data](09.6.md)
-	- 9.7. [Summary](09.7.md)
+	- 9.7. [Итоги раздела](09.7.md)
 - 10.[Internationalization and localization](10.0.md)
 	- 10.1 [Time zone](10.1.md)
 	- 10.2 [Localized resources](10.2.md)
 	- 10.3 [International sites](10.3.md)
-	- 10.4 [Summary](10.4.md)
+	- 10.4 [Итоги раздела](10.4.md)
 - 11.[Error handling, debugging and testing](11.0.md)
 	- 11.1. [Error handling](11.1.md)
 	- 11.2. [Debugging by using GDB](11.2.md)
 	- 11.3. [Write test cases](11.3.md)
-	- 11.4. [Summary](11.4.md)
+	- 11.4. [Итоги раздела](11.4.md)
 - 12.[Deployment and maintenance](12.0.md)
 	- 12.1. [Logs](12.1.md)
 	- 12.2. [Errors and crashes](12.2.md)
 	- 12.3. [Deployment](12.3.md)
 	- 12.4. [Backup and recovery](12.4.md)
-	- 12.5. [Summary](12.5.md)
+	- 12.5. [Итоги раздела](12.5.md)
 - 13.[Build a web framework](13.0.md)
 	- 13.1. [Project program](13.1.md)
 	- 13.2. [Customized routers](13.2.md)
 	- 13.3. [Design controllers](13.3.md)
 	- 13.4. [Logs and configurations](13.4.md)
 	- 13.5. [Add, delete and update blogs](13.5.md)
-	- 13.6. [Summary](13.6.md)
+	- 13.6. [Итоги раздела](13.6.md)
 - 14.[Develop web framework](14.0.md)
 	- 14.1. [Static files](14.1.md)
 	- 14.2. [Session](14.2.md)
@@ -92,5 +92,5 @@
 	- 14.4. [User validation](14.4.md)
 	- 14.5. [Multi-language support](14.5.md)
 	- 14.6. [pprof](14.6.md)
-	- 14.7. [Summary](14.7.md)
+	- 14.7. [Итоги раздела](14.7.md)
 - Appendix A [References](ref.md)