Fix docs of Min/MaxMagnitude{Number} (dotnet#9487)

* Fix docs about Min/MaxMagnitude{Number}

* Fix missing word

* Apply suggestions from code review

Co-authored-by: Tanner Gooding <tagoo@outlook.com>

---------

Co-authored-by: Bill Wagner <wiwagn@microsoft.com>
Co-authored-by: Tanner Gooding <tagoo@outlook.com>

Author: 3 people

xml/System.Numerics/INumberBase`1.xml

@@ -852,7 +852,7 @@ This function treats both positive and negative zero as zero and so will return
         <param name="y">The value to compare with <paramref name="x" />.</param>
         <summary>Compares two values to compute which has the greater magnitude.</summary>
         <returns>
-          <paramref name="x" /> if it is greater than <paramref name="y" />; otherwise, <paramref name="y" />.</returns>
+          <paramref name="x" /> if it has a greater magnitude than <paramref name="y" />; otherwise, <paramref name="y" />.</returns>
         <remarks>
           <format type="text/markdown"><![CDATA[
 
@@ -889,7 +889,7 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
         <param name="y">The value to compare with <paramref name="x" />.</param>
         <summary>Compares two values to compute which has the greater magnitude and returning the other value if an input is <c>NaN</c>.</summary>
         <returns>
-          <paramref name="x" /> if it is greater than <paramref name="y" />; otherwise, <paramref name="y" />.</returns>
+          <paramref name="x" /> if it has a greater magnitude than <paramref name="y" />; otherwise, <paramref name="y" />.</returns>
         <remarks>
           <format type="text/markdown"><![CDATA[
 
@@ -926,7 +926,7 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
         <param name="y">The value to compare with <paramref name="x" />.</param>
         <summary>Compares two values to compute which has the lesser magnitude.</summary>
         <returns>
-          <paramref name="x" /> if it is less than <paramref name="y" />; otherwise, <paramref name="y" />.</returns>
+          <paramref name="x" /> if it has a lesser magnitude than <paramref name="y" />; otherwise, <paramref name="y" />.</returns>
         <remarks>
           <format type="text/markdown"><![CDATA[
 
@@ -963,7 +963,7 @@ For <xref:System.Numerics.IFloatingPointIeee754%601> this method matches the IEE
         <param name="y">The value to compare with <paramref name="x" />.</param>
         <summary>Compares two values to compute which has the lesser magnitude and returning the other value if an input is <c>NaN</c>.</summary>
         <returns>
-          <paramref name="x" /> if it is less than <paramref name="y" />; otherwise, <paramref name="y" />.</returns>
+          <paramref name="x" /> if it has a lesser magnitude than <paramref name="y" />; otherwise, <paramref name="y" />.</returns>
         <remarks>
           <format type="text/markdown"><![CDATA[