typo

Author: dromer

docs/09.supported_vanilla_objects.md

@@ -200,7 +200,7 @@ These are commonly used - or built in - abstractions that consist of compatible
 | else/add | |
 | else/avg | |
 | else/car2pol | |
-| else/syrt.in | |
+| else/sysrt.in | |
 | else/sysrt.out | |
 | else/trig2bang | |
 | rev1~ | |