Update ToC

README.md

@@ -16,7 +16,7 @@ Table of Contents
    * [Browser](#-browser)
    * [Calculator](#-calculator)
    * [Calendar](#-calendar)
-   * [Call Blocker and Spam Filter](#-Call-Blocker-and-Spam-Filter)
+   * [Call Blocker and Spam Filter](#-call-blocker-and-spam-filter)
    * [Camera](#-camera)
    * [Clock & Time](#-clock--time)
    * [Community Clients](#-community-clients)
@@ -29,6 +29,7 @@ Table of Contents
    * [File Manager](#-file-manager)
    * [File Sharing](#-file-sharing)
    * [Firewall](#-firewall)
+   * [Flashcard apps](#-flashcard-apps)
    * [Flashlight](#-flashlight)
    * [Image Viewer & Gallery](#-image-viewer--gallery)
    * [Keyboard](#-keyboard)
@@ -44,10 +45,13 @@ Table of Contents
    * [Office](#-office)
    * [Password & Authentication](#-password--authentication)
    * [Podcast & Audio Book Player](#-podcast--audio-book-player)
+   * [RSS Readers](#-rss-readers)
+   * [Science & Education](#-science--education)
    * [SMS](#-sms)
+   * [Sports & Health](#-sports--health)
    * [Synchronisation](#-synchronisation)
    * [System](#-system)
-   * [Todo Lists](#-todo-lists)
+   * [ToDo Lists](#-todo-lists)
    * [Utilities](#-utilities)
    * [Video Player](#-video-player)
    * [Weather](#-weather)