Fix MD lint findings

README.md

@@ -16,6 +16,8 @@ _Davepl, 9/19/2021_
 ## Table of Contents <!-- omit in toc -->
 
 - [What NightDriverStrip is](#what-nightdriverstrip-is)
+- [Project Overview](#project-overview)
+- [Key Features](#key-features)
 - [Using the Web Installer](#using-the-web-installer)
   - [Introduction](#introduction)
   - [(Re)flashing your device with the Web Installer](#reflashing-your-device-with-the-web-installer)
@@ -39,7 +41,7 @@ _Davepl, 9/19/2021_
 - [Sample parts (Plummer's Software LLC Amazon affiliate links)](#sample-parts-plummers-software-llc-amazon-affiliate-links)
 - [Contributing, and the BlinkenPerBit metric](#contributing-and-the-blinkenperbit-metric)
 - [Time it takes to build this project](#time-it-takes-to-build-this-project)
-- [Old Build times, no longer relevant with current platformio, just historical curiosity:](#old-build-times-no-longer-relevant-with-current-platformio-just-historical-curiosity)
+- [Old Build times, no longer relevant with current platformio, just historical curiosity](#old-build-times-no-longer-relevant-with-current-platformio-just-historical-curiosity)
 
 ## What NightDriverStrip is
 
@@ -49,7 +51,7 @@ NightDriver can drive both WS2812B style strips and HUB75 style matrices.
 
 More recently, a web installer has been added to the project with which most of the NightDriver projects can be flashed on supported devices, using nothing but a web browser. Please refer to the next section if this is how you'd like to get started.
 
-## Project Overview:
+## Project Overview
 
 - It's an open-source project for controlling LED strips/matrices and doing cool effects on them
 - Uses WiFi for remote control and data reception.
@@ -385,7 +387,7 @@ To replicate, build the mesmerizer project.  Then delete pio/build_cache and bui
 - Mac M1 Ultra Studio [10-core, 20-thread]
   -> [davepl 11/29/2023] 48.368 seconds
 
-## Old Build times, no longer relevant with current platformio, just historical curiosity:
+## Old Build times, no longer relevant with current platformio, just historical curiosity
 
 Time to build the SPECTRUM config (`pio run -e spectrum`). Assumes a clean build after everything has been installed and downloaded.