Updated plugins, also experimenting with a new font

The font is IBM Plex Mono: https://ibm.github.io/type/

sources_non_forked/vim-go/ftplugin/gohtmltmpl.vim

@@ -1,8 +1,7 @@
 if exists("b:did_ftplugin")
   finish
 endif
-let b:did_ftplugin = 1
 
-setlocal commentstring=<!--\ %s\ -->
+runtime! ftplugin/html.vim
 
 " vim: sw=2 ts=2 et