update icon: msdos (original, plain, line) (devicons#1980)

* Updated icon MSDOS

* Update msdos json color

* Removed padding for the SVGs

* Unified paths for plain svg

---------

Co-authored-by: Josélio Júnior <[email protected]>

Author: canaleal

devicon.json

@@ -6139,10 +6139,11 @@
                 "line"
             ],
             "font": [
+                "plain",
                 "line"
             ]
         },
-        "color": "#ff0000",
+        "color": "#000",
         "aliases": []
     },
     {