Merge pull request #617 from elect86/patch-4

Update func_common.hpp, typo #617

glm/detail/func_common.hpp

@@ -219,7 +219,7 @@ namespace glm
 	/// glm::vec4 h;
 	/// ...
 	/// glm::vec4 r = glm::mix(g, h, a); // Interpolate with a floating-point scalar two vectors. 
-	/// glm::vec4 s = glm::mix(g, h, b); // Teturns g or h;
+	/// glm::vec4 s = glm::mix(g, h, b); // Returns g or h;
 	/// glm::dvec3 t = glm::mix(e, f, a); // Types of the third parameter is not required to match with the first and the second.
 	/// glm::vec4 u = glm::mix(g, h, r); // Interpolations can be perform per component with a vector for the last parameter.
 	/// @endcode