Update README.md

README.md

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-- [Learning](#learning)
-  - [Technical Tutorials](#technical-tutorials)
-  - [Courses](#courses)
-  - [Theory](#theory)
-  - [University Course Archives](#university-course-archives)
-- [Documentation](#documentation)
-- [Simulators](#simulators)
-  - [Analog and Mixed Signal Circuit Simulators](#analog-and-mixed-signal-circuit-simulators)
-  - [Verilog HDL Simulators](#verilog-hdl-simulators)
-- [Gerber Viewers](#gerber-viewers)
-  - [Online](#online)
-  - [Installable](#installable)
-- [Free EDA Packages](#free-eda-packages)
-- [Paid EDA Packages](#paid-eda-packages)
-- [CAD Specific](#cad-specific)
-  - [KiCad](#kicad)
-  - [Eagle](#eagle)
-  - [Altium](#altium)
-- [PCB Batching Services](#pcb-batching-services)
-- [Part Search Engines](#part-search-engines)
-- [Project Sharing Platforms](#project-sharing-platforms)
-- [Inventory Management and Purchasing](#inventory-management-and-purchasing)
-- [Miscellaneous Software Projects](#miscellaneous-software-projects)
-- [Development Board Retailers](#development-board-retailers)
-- [Blogs](#blogs)
-- [Forums](#forums)
-  - [Discussion](#discussion)
-  - [Help](#help)
-- [Podcasts](#podcasts)
-- [Videos](#videos)
-- [Subscription Kit Services](#subscription-kit-services)
-- [3D Part Models](#3d-part-models)
-- [Other Lists](#other-lists)
 
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