fix: update icons for yaml/yml extensions (#629)

Co-authored-by: Alexander Courtis <alex@courtis.org>

Author: fjfnaranjo

lua/nvim-web-devicons/default/icons_by_file_extension.lua

@@ -479,8 +479,8 @@ return {
   ["xslt"]           = { icon = "󰗀", color = "#33A9DC", cterm_color = "74",  name = "Xslt"                       },
   ["xul"]            = { icon = "", color = "#E37933", cterm_color = "166", name = "Xul"                        },
   ["xz"]             = { icon = "", color = "#ECA517", cterm_color = "214", name = "Xz"                         },
-  ["yaml"]           = { icon = "", color = "#6D8086", cterm_color = "66",  name = "Yaml"                       },
-  ["yml"]            = { icon = "", color = "#6D8086", cterm_color = "66",  name = "Yml"                        },
+  ["yaml"]           = { icon = "", color = "#D70000", cterm_color = "160", name = "Yaml"                       },
+  ["yml"]            = { icon = "", color = "#D70000", cterm_color = "160", name = "Yml"                        },
   ["zig"]            = { icon = "", color = "#F69A1B", cterm_color = "172", name = "Zig"                        },
   ["zip"]            = { icon = "", color = "#ECA517", cterm_color = "214", name = "Zip"                        },
   ["zsh"]            = { icon = "", color = "#89E051", cterm_color = "113", name = "Zsh"                        },