[TC][Admin/Partners page] [Functionality] Admin is able to edit a name of a partner in the field "Назва посилання"

**Priority: High**

**Preconditions**
1. Go to the site - https://frontend.historycode.online/admin-panel.
2. Login as admin.
3. Go to the block "Admin/Партнери".
4. There are created partners with link to websites on the partners page.

**Steps to reproduce**
1. Choose any partner.
2. Click on an icon "Edit" in the column "Дії"
3. Change the text in the field to "Назва посилання". The non-mandatory field, symbols limit is 100.
4. Click the button "Зберегти"
6. Close the modal window.
7. Click on an icon "Edit" again.

**Expected result**
1. A message is displayed on the screen "Партнера успішно додано/оновлено!".
2. In the modal window displayed updated text in the filed "Назва посилання".

**[User Story #1491](https://github.com/ita-social-projects/StreetCode/issues/1491)**

**Related bug:**