Update doc/specs/stdlib_math.md

MilanSkocic · perazz · web-flow · commit 9498391aabba · 2024-07-03T19:51:54.000+02:00
Co-authored-by: Federico Perini &lt;federico.perini@gmail.com&gt;
diff --git a/doc/specs/stdlib_math.md b/doc/specs/stdlib_math.md
@@ -392,7 +392,7 @@ Experimental
 
 Elemenal function.
 
-`deg2rad` converts the phase angle from degree to radian.
+`deg2rad` converts phase angles from degrees to radians.
 
 #### Syntax
 
