Update math.adoc

Changed text note to Admonition.

src/docs/asciidoc/jme3/intermediate/math.adoc

@@ -10,7 +10,11 @@ ifdef::env-github,env-browser[:outfilesuffix: .adoc]
 
 == Formulas
 
-Note: Typically you have to string these formulas together. Look in the table for what you want, and what you have. If the two are not the same line, than you need conversion steps inbetween. E.g. if you have an angle in degrees, but the formula expects radians: 1) convert degrees to radians, 2) use the radians formula on the result.
+[NOTE]
+====
+Typically you have to string these formulas together. Look in the table for what you want, and what you have. If the two are not the same line, than you need conversion steps inbetween. E.g. if you have an angle in degrees, but the formula expects radians: 1) convert degrees to radians, 2) use the radians formula on the result.
+====
+
 [cols="3", options="header"]
 |===