Docs: update links to Proggy Fonts. (#7211)

docs/FONTS.md

@@ -482,7 +482,7 @@ Some fonts files are available in the `misc/fonts/` folder:
 #### MONOSPACE FONTS
 
 Pixel Perfect:
-- Proggy Fonts, by Tristan Grimmer http://www.proggyfonts.net or http://upperbounds.net
+- Proggy Fonts, by Tristan Grimmer http://www.proggyfonts.net or http://upperboundsinteractive.com/fonts.php
 - Sweet16, Sweet16 Mono, by Martin Sedlak (Latin + Supplemental + Extended A) https://github.com/kmar/Sweet16Font (also include an .inl file to use directly in dear imgui.)
 
 Regular:

docs/README.md

@@ -207,7 +207,7 @@ Sponsoring, maintenance/support contracts and other B2B transactions are hosted
 
 Omar: "I first discovered the IMGUI paradigm at [Q-Games](https://www.q-games.com) where Atman Binstock had dropped his own simple implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating and improving it."
 
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+Embeds [ProggyClean.ttf](https://www.proggyfonts.net) font by Tristan Grimmer (MIT license).
 <br>Embeds [stb_textedit.h, stb_truetype.h, stb_rect_pack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
 
 Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. Also thank you to everyone posting feedback, questions and patches on GitHub.

imgui_draw.cpp

@@ -4205,8 +4205,8 @@ static unsigned int stb_decompress(unsigned char *output, const unsigned char *i
 //-----------------------------------------------------------------------------
 // ProggyClean.ttf
 // Copyright (c) 2004, 2005 Tristan Grimmer
-// MIT license (see License.txt in http://www.upperbounds.net/download/ProggyClean.ttf.zip)
-// Download and more information at http://upperbounds.net
+// MIT license (see License.txt in http://www.proggyfonts.net/index.php?menu=download)
+// Download and more information at http://www.proggyfonts.net or http://upperboundsinteractive.com/fonts.php
 //-----------------------------------------------------------------------------
 // File: 'ProggyClean.ttf' (41208 bytes)
 // Exported using misc/fonts/binary_to_compressed_c.cpp (with compression + base85 string encoding).