Update doc/specs/stdlib_math.md

MilanSkocic · perazz · web-flow · commit f4fa822c9036 · 2024-07-03T19:52:00.000+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
@@ -404,7 +404,7 @@ Elemenal function.
 
 #### Return value
 
-Returns the `real` phase in radian
+Returns the `real` phase angle in radians
 
 #### Example
 
