docs: Fix number of notification providers

Author: meltyshev

README.md

@@ -15,7 +15,7 @@
 - **Collaborative Kanban Boards**: Create projects, boards, lists, cards, and manage tasks with an intuitive drag-and-drop interface
 - **Real-Time Updates**: Instant syncing across all users, no refresh needed
 - **Rich Markdown Support**: Write beautifully formatted card descriptions with a powerful markdown editor
-- **Flexible Notifications**: Get alerts through 140+ providers, fully customizable to your workflow
+- **Flexible Notifications**: Get alerts through 100+ providers, fully customizable to your workflow
 - **Seamless Authentication**: Single sign-on with OpenID Connect integration
 - **Multilingual & Easy to Translate**: Full internationalization support for a global audience