Adding pdf working link (#513)

* Adding pdf working link 

wrt #507

* Update README.el.md

* Update README.fil.md

* Update README.fr.md

* Update README.pt-BR.md

README.md

@@ -92,7 +92,7 @@ You can run this documentation offline by using [Docsify](https://docsify.js.org
 
 ## PDF
 
-A PDF of all of the lessons can be found [here](pdf/readme.pdf)
+A PDF of all of the lessons can be found [here](https://microsoft.github.io/Web-Dev-For-Beginners/pdf/readme.pdf)
 
 ## Other Curricula
 

translations/README.el.md

@@ -88,7 +88,7 @@
 
 ## PDF
 
-Μπορείτε να βρείτε [εδώ](pdf/readme.pdf) ενα PDF με όλα τα μαθήματα.
+Μπορείτε να βρείτε [εδώ](https://microsoft.github.io/Web-Dev-For-Beginners/pdf/readme.pdf) ενα PDF με όλα τα μαθήματα.
 
 ## Άλλα προγράμματα μαθημάτων
 

translations/README.fil.md

@@ -89,7 +89,7 @@ Maaari mong patakbuhin ang dokumentasyong ito offline sa pamamagitan ng paggamit
 
 ## PDF
 
-Ang isang PDF ng lahat ng mga aralin ay matatagpuan [dito](pdf/readme.pdf)
+Ang isang PDF ng lahat ng mga aralin ay matatagpuan [dito](https://microsoft.github.io/Web-Dev-For-Beginners/pdf/readme.pdf)
 
 ## Iba pang Kurikulum
 

translations/README.fr.md

@@ -105,7 +105,7 @@ Vous pouvez y accéder en utilisant [Docsify](https://docsify.js.org/#/). Effect
 
 ## PDF
 
-Ce cours est disponible en PDF. [Cliquez ici](../pdf/readme.pdf)
+Ce cours est disponible en PDF. [Cliquez ici](https://microsoft.github.io/Web-Dev-For-Beginners/pdf/readme.pdf)
 
 ## Autres Cours
 

translations/README.pt-BR.md

@@ -99,7 +99,7 @@ Você pode utilizar essa documentação quando estiver offline através de [Docs
 
 ## PDF
 
-Um PDF de todas as lições pode ser encontrado [bem aqui](../pdf/readme.pdf)
+Um PDF de todas as lições pode ser encontrado [bem aqui](https://microsoft.github.io/Web-Dev-For-Beginners/pdf/readme.pdf)
 
 ## Outros Cursos