Replace last 30x links in main README with their target (#814)

README_pt-BR.md

@@ -512,7 +512,6 @@ Duas versões chinesas desta lista estão disponíveis [aqui](https://github.com
 - [![Open-Source Software][oss icon]](http://archive.blender.org/download/source-code/index.html) [Blender](https://www.blender.org/) - a free and open source complete 3D creation pipeline for artists and small teams.
 - [![Open-Source Software][oss icon]](https://sourceforge.net/projects/cinepaint/) [Cinepaint](http://cinepaint.org/) - Open source deep paint software
 - [![Open-Source Software][oss icon]](https://github.com/lettier/gifcurry) [Gifcurry](https://lettier.github.io/gifcurry/) - Your open source video to GIF maker built with Haskell.
-- [Gravit](https://www.designer.io/) - Gravit Designer is a full featured free vector design app right at your fingertip.
 - [Heron Animation](https://heronanimation.brunolefevre.net/) - A free stop animation making program.
 - [![Open-Source Software][oss icon]](https://github.com/inkscape/inkscape) [Inkscape](https://inkscape.org/en/) - A powerful, free design tool for you , whether you are an illustrator, designer, web designer or just someone who needs to create some vector imagery
 - [Karbon](https://www.calligra.org/karbon/) - An open source vector drawing program. [![Open-Source Software][oss icon]](https://www.kde.org/applications/graphics/karbon/development)
@@ -533,7 +532,7 @@ Duas versões chinesas desta lista estão disponíveis [aqui](https://github.com
 - [![Open-Source Software][oss icon]](https://github.com/darktable-org/darktable) [Darktable](http://www.darktable.org/) - Darktable is an open source photography workflow application and RAW developer.
 - [GIMP](https://www.gimp.org/downloads/) - GIMP is a freely distributed program for such tasks as photo retouching, image composition and image authoring[![Open-Source Software][oss icon]](https://github.com/GNOME/gimp)
 - [![Open-Source Software][oss icon]](http://www.graphicsmagick.org/) [GraphicsMagick](http://www.graphicsmagick.org/) - GraphicsMagick is the swiss army knife of image processing.
-- [Hugin](https://hugin.sourceforge.net/) - an easy to use cross-platform panoramic imaging toolchain based on Panorama Tools.
+- [Hugin](https://hugin.sourceforge.io/) - an easy to use cross-platform panoramic imaging toolchain based on Panorama Tools.
 - [ImageMagik](http://www.imagemagick.org/script/index.php) - ImageMagick is a suite of command-line utilities for modifying and working with images.
 - [Luminance HDR](https://sourceforge.net/projects/qtpfsgui/) - Luminance HDR is an open source graphical user interface application that aims to provide a workflow for HDR imaging. [![Open-Source Software][oss icon]](https://github.com/LuminanceHDR/LuminanceHDR)
 - [Photivo](https://photivo.org/) - Photivo is a free and open source (GPL3) photo processor, handles your RAW and bitmap files (TIFF, JPEG, BMP, PNG and many more) in a non-destructive 16 bit processing pipe with gimp workflow integration and batch mode. It is intended to be used in a workflow together with digiKam/F-Spot/Shotwell and Gimp. [![Open-Source Software][oss icon]](https://github.com/google-code-export/photivo)
@@ -609,7 +608,7 @@ Duas versões chinesas desta lista estão disponíveis [aqui](https://github.com
 - [Firefox](https://www.mozilla.org/en-US/firefox/new/) - A popular Web Browsers with a lot of plugins/apps. [![Open-Source Software][oss icon]](https://developer.mozilla.org/en-US/docs/Mozilla/Developer_guide)
 - [IceCat](https://www.gnu.org/software/gnuzilla/) - GNU version of Firefox built for privacy, using only free software and free of trademarks. [![Open-Source Software][oss icon]](https://git.savannah.gnu.org/cgit/gnuzilla.git)
 - [Midori](https://astian.org/midori-browser/download/) - A lightweight free browser that runs well on low spec systems. [![Open-Source Software][oss icon]](https://launchpad.net/~midori/+archive/ubuntu/ppa).
-- [Min](https://minbrowser.github.io/min) - A smarter, faster web browser. [![Open-Source Software][oss icon]](https://github.com/minbrowser/min)
+- [Min](https://minbrowser.org/min/) - A smarter, faster web browser. [![Open-Source Software][oss icon]](https://github.com/minbrowser/min)
 - [Opera](http://www.opera.com/) - Opera browser is everything you need to do more on the web.
 - [QuteBrowser](https://www.qutebrowser.org/) - A keyboard-driven, vim-like browser based on PyQt5. [![Open-Source Software][oss icon]](https://github.com/qutebrowser/qutebrowser)
 - [Vivaldi](https://vivaldi.com/?lang=en) - A new and rising browser with a lot of customizations.
@@ -1220,7 +1219,7 @@ _Todos do @ reddit.com/r/linux, reddit.com/r/ubuntu, vozforums.com e outros fÃ
 
 ## Não sabe como contribuir?
 
-- [How to Use Github](https://guides.github.com/activities/forking/)
+- [How to Use Github](https://docs.github.com/en/get-started/exploring-projects-on-github/contributing-to-a-project)
 - [How to Git from the Command Line](https://rogerdudler.github.io/git-guide/)
 - [What is Markdown?](https://github.com/LewisVo/Markdown-Tutorial) - Markdown is the writing method used to create this list, if you want to know how to format properly, it's best that you learn how to use Github Markdown.
 - [Alternative Markdown Guide:](https://docs.github.com/en/get-started/writing-on-github/getting-started-with-writing-and-formatting-on-github/basic-writing-and-formatting-syntax)