MathF.SinCos remarks uses Math.PI instead of MathF.PI (#11824)

Author: kanilsz

xml/System/MathF.xml

@@ -11,7 +11,7 @@
     <AssemblyVersion>4.2.1.0</AssemblyVersion>
     <AssemblyVersion>4.2.2.0</AssemblyVersion>
   </AssemblyInfo>
-  <AssemblyInfo>
+  <AssemblyInfo>s
     <AssemblyName>netstandard</AssemblyName>
     <AssemblyVersion>2.1.0.0</AssemblyVersion>
   </AssemblyInfo>
@@ -2402,10 +2402,11 @@ If the value of the `x` argument is <xref:System.Single.NaN?displayProperty=name
         <summary>Returns the sine and cosine of the specified angle.</summary>
         <returns>The sine and cosine of <paramref name="x" />. If <paramref name="x" /> is equal to <see cref="F:System.Single.NaN" />, <see cref="F:System.Single.NegativeInfinity" />, or <see cref="F:System.Single.PositiveInfinity" />, this method returns <see cref="F:System.Single.NaN" />.</returns>
         <remarks>
-          <format type="text/markdown"><![CDATA[
+          <format type="text/markdown">
+  <![CDATA[
 
 ## Remarks
- The angle, `x`, must be in radians. Multiply by <xref:System.Math.PI?displayProperty=nameWithType>/180 to convert degrees to radians.
+ The angle, `x`, must be in radians. Multiply by <xref:System.MathF.PI?displayProperty=nameWithType>/180 to convert degrees to radians.
 
  This method calls into the underlying C runtime, and the exact result or valid input range may differ between different operating systems or architectures.