fix: remove duplicate Elm entry and fix emoji formatting

Author: gowtham1412-p

books/free-programming-books-langs.md

@@ -52,7 +52,6 @@ Books on general-purpose programming that don't focus on a specific language are
 * [Elixir](#elixir)
     * [Ecto](#ecto)
     * [Phoenix](#phoenix)
-* [Elm](#elm)
 * [Erlang](#erlang)
 * [F#](#f-sharp)
 * [Firefox OS](#firefox-os)
@@ -281,8 +280,8 @@ Books on general-purpose programming that don't focus on a specific language are
 * [APL2 at a glance](https://ia801009.us.archive.org/28/items/apl-2-at-a-glance-brown-pakin-polivka/APL2_at_a_Glance_-_Brown_Pakin_Polivka.pdf) - James A. Brown, Sandra Pakin, Raymond P. Polivka - 1988 (PDF)
 * [Introduction to College Mathematics with A Programming Language (1978)](https://softwarepreservation.computerhistory.org/apl/book/CollegeMathematicswithAPL.pdf) - E. J. LeCuyer (PDF)
 * [Learning APL](https://xpqz.github.io/learnapl) - Stefan Kruger (HTML,PDF,IPYNB)
-* [Mastering Dyalog APL](https://www.dyalog.com/mastering-dyalog-apl.htm) (PDF, HTML, IPYNB) *( :construction: in process)*
-* [Reinforcement Learning From The Ground Up](https://romilly.github.io/o-x-o) - Romilly Cocking (PDF, HTML, IPYNB) *( :construction: in process)*
+* [Mastering Dyalog APL](https://www.dyalog.com/mastering-dyalog-apl.htm) (PDF, HTML, IPYNB) *(:construction: in process)*
+* [Reinforcement Learning From The Ground Up](https://romilly.github.io/o-x-o) - Romilly Cocking (PDF, HTML, IPYNB) *(:construction: in process)*
 
 
 ### App Inventor
@@ -294,11 +293,11 @@ Books on general-purpose programming that don't focus on a specific language are
 ### Arduino
 
 * [Arduino-docs : A beginner's guide](https://arduino-doc.readthedocs.io/en/latest/) - Paramesh Chandra (HTML)
-* [Arduino Programming Notebook](https://unglue.it/work/152452) - Brian Evans (PDF) ( :card_file_box: *archived at unglue.it*) (CC BY-NC-SA)
+* [Arduino Programming Notebook](https://unglue.it/work/152452) - Brian Evans (PDF) (:card_file_box: *archived at unglue.it*) (CC BY-NC-SA)
 * [Arduino Projects Book](https://www.eitkw.com/wp-content/uploads/2020/03/Arduino_Projects_Book.pdf) - Scott Fitzgerald and Michael Shiloh (PDF)
 * [Arduino Tips, Tricks, and Techniques](https://cdn-learn.adafruit.com/downloads/pdf/arduino-tips-tricks-and-techniques.pdf) - lady ada (PDF)
 * [Getting started with Arduino – A Beginner’s Guide](http://manuals.makeuseof.com.s3.amazonaws.com/for-mobile/Arduino_-_MakeUseOf.com.pdf) - Brad Kendall (PDF)
-* [Getting Started with Arduino products](https://www.arduino.cc/en/Guide) - Official Arduino Documentation *( :construction: in process)*
+* [Getting Started with Arduino products](https://www.arduino.cc/en/Guide) - Official Arduino Documentation *(:construction: in process)*
 * [Introduction to Arduino](http://playground.arduino.cc/Main/ManualsAndCurriculum)
 * [Introduction to Arduino : A piece of cake!](https://www.introtoarduino.com) - Alan G. Smith
 * [Learn Arduino](https://riptutorial.com/Download/arduino.pdf) - Compiled from StackOverflow documentation (PDF) (CC BY-SA)
@@ -308,7 +307,7 @@ Books on general-purpose programming that don't focus on a specific language are
 
 ### ASP.NET
 
-* [Architecting Modern Web Applications with ASP.NET Core and Microsoft Azure (2020)](https://aka.ms/webappebook) - Steve "ardalis" Smith (PDF) *( :construction: in process)*
+* [Architecting Modern Web Applications with ASP.NET Core and Microsoft Azure (2020)](https://aka.ms/webappebook) - Steve "ardalis" Smith (PDF) *(:construction: in process)*
 * [ASP.NET MVC Music Store](http://mvcmusicstore.codeplex.com)
 * [ASP.NET WebHooks Succinctly](https://www.syncfusion.com/ebooks/aspnet_webhooks_succinctly) - Gaurav Arora
 * [ASP.NET with C# (2008)](http://www.vijaymukhi.com/documents/books/vsnet/content.htm) - Vijay Mukhi, Sonal Mukhi, Neha Kotecha
@@ -334,7 +333,7 @@ Books on general-purpose programming that don't focus on a specific language are
 ### Assembly Language
 
 * [A fundamental introduction to x86 assembly programming](https://www.nayuki.io/page/a-fundamental-introduction-to-x86-assembly-programming) - Project Nayuki (HTML)
-* [ARM Assembly Language Programming](http://www.rigwit.co.uk/ARMBook/ARMBook.pdf) - Peter Knaggs (PDF) *( :construction: in process)*
+* [ARM Assembly Language Programming](http://www.rigwit.co.uk/ARMBook/ARMBook.pdf) - Peter Knaggs (PDF) *(:construction: in process)*
 * [Assemblers And Loaders (1993)](https://www.davidsalomon.name/assem.advertis/asl.pdf) - David Salomon (PDF)
 * [Assembly Language Succinctly](https://www.syncfusion.com/succinctly-free-ebooks/assemblylanguage) - Christopher Rose, Syncfusion Inc. (HTML, PDF, EPUB, Kindle)
 * [PC Assembly Language](https://pacman128.github.io/pcasm/) - P. A. Carter (CC BY-NC-SA)