fix code output

Author: fey

modules/10-basics/10-hello-world/en/README.md

@@ -1,8 +1,8 @@
 As is our tradition, we'll begin by writing the 'Hello, World!' program. The program will print the following text:
 
-<pre class='hexlet-basics-output'>
+```text
 Hello, World!
-</pre>
+```
 
 Output to the screen is done with a special command `echo`, followed by a single or double-quoted string to be output. Be sure to put a semicolon at the end.
 

modules/10-basics/40-instructions/en/EXERCISE.md

@@ -1,7 +1,7 @@
 Print these three names, one after the other: _Robert_, _Stannis_, _Renly_. As a result, the editor should print:
 
-<pre class='hexlet-basics-output'>
+```text
 RobertStannisRenly
-</pre>
+```
 
 Use a `print_r()` call for each name.

modules/10-basics/40-instructions/en/README.md

@@ -11,9 +11,9 @@ print_r('Dracarys!');
 
 When you run this code, two sentences are displayed in sequence:
 
-<pre class='hexlet-basics-output'>
+```text
 Mother of Dragons. Dracarys!
-</pre>
+```
 
 Theoretically, the instructions can be written one after the other without moving them to a new line:
 

modules/10-basics/40-instructions/es/EXERCISE.md

@@ -1,7 +1,7 @@
 Muestra en pantalla consecutivamente tres nombres: _Robert_, _Stannis_, _Renly_. El resultado en pantalla debe ser:
 
-<pre class='hexlet-basics-output'>
+```text
 RobertStannisRenly
-</pre>
+```
 
 Utiliza una llamada `print_r()` para cada nombre.

modules/10-basics/40-instructions/ru/EXERCISE.md

@@ -1,7 +1,7 @@
 Выведите на экран друг за другом три имени: _Robert_, _Stannis_, _Renly_. В результате на экране должно отобразиться:
 
-<pre class='hexlet-basics-output'>
+```text
 RobertStannisRenly
-</pre>
+```
 
 Для каждого имени используйте свой собственный вызов `print_r()`.

modules/10-basics/45-testing/en/README.md

@@ -13,13 +13,13 @@ That is why our website says, “Tests passed” once you've done the exercise c
 
 Here's a simple example, say you want to print the string `Hello, World!`. Now imagine you make a small mistake and the function displays a different value. In that case, the system will give you the following message:
 
-<pre class='hexlet-basics-output'>
+```text
   -'Hello, World!'
   +'ello, World!'
 
   FAILURES!
   Tests: 1, Assertions: 1, Failures: 1.
-</pre>
+```
 
 A hint appears on the screen. The `+` sign on it indicates what your code printed. The `-` sign is what was expected. By comparing the two values, you can see the error. In the example above, you can see that the letter _H_ is missing from the output.
 

modules/10-basics/45-testing/es/README.md

@@ -13,13 +13,13 @@ Es por eso que nuestro sitio web muestra "Pruebas superadas" cuando resuelves co
 
 Aquí tienes un ejemplo sencillo: imprimir la cadena `Hello, World!`. Supongamos que cometiste un pequeño error y la función muestra otro valor en la pantalla. El sistema responderá algo así:
 
-<pre class='hexlet-basics-output'>
+```text
   -'Hello, World!'
   +'ello, World!'
 
   ¡FALLOS!
   Pruebas: 1, Afirmaciones: 1, Fallos: 1.
-</pre>
+```
 
 En la pantalla aparece una pista. El signo `+` indica lo que imprimió tu código. El signo `-` indica lo que se esperaba. Al comparar estos dos valores, puedes ver el error. En el ejemplo anterior, se puede ver que falta la letra _H_ en la salida.
 

modules/10-basics/45-testing/ru/README.md

@@ -13,13 +13,13 @@
 
 Вот простой пример: необходимо распечатать строку `Hello, World!`. Предположим, вы допустили небольшую ошибку, и функция вывела на экран другое значение. Система ответит примерно так:
 
-<pre class='hexlet-basics-output'>
+```text
   -'Hello, World!'
   +'ello, World!'
 
   FAILURES!
   Tests: 1, Assertions: 1, Failures: 1.
-</pre>
+```
 
 На экране появляется подсказка. На ней знаком `+` обозначено то, что распечатал ваш код. Знаком `-` – то, что ожидалось. Сравнивая эти два значения, можно увидеть ошибку. В примере выше видно, что в выводе пропущена буква _H_.
 

modules/20-arithmetics/20-basic/en/README.md

@@ -26,9 +26,9 @@ print_r(3 + 4);
 
 After we run the program, the result will appear on the screen:
 
-<pre class='hexlet-basics-output'>
+```text
 7
-</pre>
+```
 
 Besides addition, we can also use the following operations:
 

modules/20-arithmetics/30-composition/en/EXERCISE.md

@@ -1,7 +1,7 @@
 
 Write a program that calculates and prints the value of this expression:
 
-```
+```text
 8 / 2 + 5 - -3 / 2
 ```