fix title case in links to Task management & To-do lists section (#3163)

README.md

@@ -1721,7 +1721,7 @@ _Related: [Booking and Scheduling](#booking-and-scheduling)_
 
 **[`^        back to top        ^`](#)**
 
-_Related: [Ticketing](#ticketing), [Task management & To-do lists](#task-management--to-do-lists)_
+_Related: [Ticketing](#ticketing), [Task management & To-do Lists](#task-management--to-do-lists)_
 
 _See also: [awesome-sysadmin/Code Review](https://github.com/awesome-foss/awesome-sysadmin#code-review)_
 
@@ -1820,7 +1820,7 @@ _Related: [Software Development - Project Management](#software-development---pr
 
 **[`^        back to top        ^`](#)**
 
-_Related: [Task management & To-do lists](#task-management--to-do-lists), [Software Development - Project Management](#software-development---project-management)_
+_Related: [Task management & To-do Lists](#task-management--to-do-lists), [Software Development - Project Management](#software-development---project-management)_
 
 - [Bugzilla](https://www.bugzilla.org/) - General-purpose bugtracker and testing tool originally developed and used by the Mozilla project. `MPL-2.0` `Perl`
 - [Bumpy Booby](https://bumpy-booby.derivoile.fr/) - Simple, responsive and highly customizable PHP bug tracking system. ([Source Code](https://github.com/piero-la-lune/Bumpy-Booby)) `MIT` `PHP`