fix another typo and link to correct reference

Author: jlburkhead

authors.md

@@ -22,6 +22,7 @@ The following people are totally rad and awesome because they have contributed r
 * Mike Hatfield *[email protected]*
 * [Anton Rissanen](http://github.com/antris) *[email protected]*
 * Calum Robertson *http://github.com/randusr836*
+* Jake Burkhead *https://github.com/jlburkhead*
 * ...You! What are you waiting for? Check out the [contributing](/contributing) section and get cracking!
 
 # Developers

chapters/math/working-with-exponents-and-logarithms.md

@@ -34,4 +34,4 @@ Math.log(100) / Math.log(10)
 
 ## Discussion
 
-For more information on the Math object see the documentation on the [Mozilla Developer Netword](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math). Also refer to [Converting Radians and Degrees](/chapters/math/radians-degrees) for discussion of the various constants in the Math object.
+For more information on the Math object see the documentation on the [Mozilla Developer Network](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math). Also refer to [Math Constants](/chapters/math/constants) for discussion of the various constants in the Math object.