(chore) Update SUPPORTED_LANGUAGES.md to add arduino (highlightjs#2639)

ElectricRCAircraftGuy · web-flow · commit 8dcdddd4552b · 2020-07-27T10:01:52.000-04:00
diff --git a/SUPPORTED_LANGUAGES.md b/SUPPORTED_LANGUAGES.md
@@ -12,6 +12,7 @@ Languages that listed a **Package** below are 3rd party languages and are not bu
 | ABNF                    | abnf                   |         |
 | Access logs             | accesslog              |         |
 | Ada                     | ada                    |         |
+| Arduino (C++ w/Arduino libs) | arduino ino           |         |
 | ARM assembler           | armasm, arm            |         |
 | AVR assembler           | avrasm                 |         |
 | ActionScript            | actionscript, as       |         |
