docs: update according to the changes

README.md

@@ -109,16 +109,22 @@ import (
 	"context"
 	"fmt"
 	"time"
-	
+
 	"github.com/tarantool/go-tarantool/v2"
 )
 
 func main() {
-	opts := tarantool.Opts{User: "guest"}
-	ctx, cancel := context.WithTimeout(context.Background(), 
+	dialer := tarantool.TtDialer {
+		Address: "127.0.0.1:3301",
+		User: "guest",
+	}
+	opts := tarantool.Opts{
+		Timeout: time.Second,
+	}
+	ctx, cancel := context.WithTimeout(context.Background(),
 		500 * time.Millisecond)
 	defer cancel()
-	conn, err := tarantool.Connect(ctx, "127.0.0.1:3301", opts)
+	conn, err := tarantool.Connect(ctx, dialer, opts)
 	if err != nil {
 		fmt.Println("Connection refused:", err)
 	}
@@ -135,34 +141,45 @@ func main() {
 **Observation 1:** The line "`github.com/tarantool/go-tarantool/v2`" in the
 `import(...)` section brings in all Tarantool-related functions and structures.
 
-**Observation 2:** The line starting with "`Opts :=`" sets up the options for
+**Observation 2:** The line starting with "`dialer :=`" creates dialer for
+`Connect()`. This structure contains fields required to establish a connection.
+
+**Observation 3:** The line starting with "`opts :=`" sets up the options for
 `Connect()`. In this example, the structure contains only a single value, the
-username. The structure may also contain other settings, see more in
+timeout. The structure may also contain other settings, see more in
 [documentation][godoc-opts-url] for the "`Opts`" structure.
 
-**Observation 3:** The line containing "`tarantool.Connect`" is essential for
+**Observation 4:** The line containing "`tarantool.Connect`" is essential for
 starting a session. There are three parameters:
 
 * a context,
-* a string with `host:port` format,
+* a dialer that was set up earlier,
 * the option structure that was set up earlier.
 
 There will be only one attempt to connect. If multiple attempts needed, 
 "`tarantool.Connect`" could be placed inside the loop with some timeout 
 between each try. Example could be found in the [example_test](./example_test.go), 
 name - `ExampleConnect_reconnects`.
 
-**Observation 4:** The `err` structure will be `nil` if there is no error,
+**Observation 5:** The `err` structure will be `nil` if there is no error,
 otherwise it will have a description which can be retrieved with `err.Error()`.
 
-**Observation 5:** The `Insert` request, like almost all requests, is preceded
+**Observation 6:** The `Insert` request, like almost all requests, is preceded
 by the method `Do` of object `conn` which is the object that was returned
 by `Connect()`.
 
 ### Migration to v2
 
 The article describes migration from go-tarantool to go-tarantool/v2.
 
+#### dialer
+
+Now you need to use `Dialer` for connect to the Tarantool instead of
+specifying the address. If you were using a non-SSL connection, you need
+to create `TtDialer`. For SSL-enabled connections, use `OpenSslDialer`.
+Please note that the options for creating a connection are now stored in
+corresponding `Dialer`, not in `Opts`.
+
 #### datetime package
 
 Now you need to use objects of the Datetime type instead of pointers to it. A