Fix docs

glm/gtx/vector_angle.hpp

@@ -58,15 +58,15 @@ namespace glm
 	/// @addtogroup gtx_vector_angle
 	/// @{
 
-	//! Returns the absolute angle between two vectors
+	//! Returns the absolute angle between two vectors.
 	//! Parameters need to be normalized.
-	/// @see gtx_vector_angle extension
+	/// @see gtx_vector_angle extension.
 	template <typename vecType>
 	GLM_FUNC_DECL typename vecType::value_type angle(
 		vecType const & x, 
 		vecType const & y);
 
-	//! Returns the oriented angle between two 2d vectors 
+	//! Returns the oriented angle between two 2d vectors.
 	//! Parameters need to be normalized.
 	/// @see gtx_vector_angle extension.
 	template <typename T, precision P>