vec: update docs for norm

docs/source/vec3.rst

@@ -158,7 +158,8 @@ Functions documentation
 
 .. c:function:: float  glm_vec3_norm(vec3 vec)
 
-    norm (magnitude) of vec3
+    | euclidean norm (magnitude), also called L2 norm
+    | this will give magnitude of vector in euclidean space
 
     Parameters:
       | *[in]*  **vec**   vector

docs/source/vec4.rst

@@ -134,7 +134,8 @@ Functions documentation
 
 .. c:function:: float  glm_vec4_norm(vec4 vec)
 
-    norm (magnitude) of vec4
+    | euclidean norm (magnitude), also called L2 norm
+    | this will give magnitude of vector in euclidean space
 
     Parameters:
       | *[in]*  **vec**   vector

include/cglm/vec3.h

@@ -200,7 +200,8 @@ glm_vec3_norm2(vec3 v) {
 }
 
 /*!
- * @brief norm (magnitude) of vec3
+ * @brief euclidean norm (magnitude), also called L2 norm
+ *        this will give magnitude of vector in euclidean space
  *
  * @param[in] v vector
  *

include/cglm/vec4.h

@@ -240,7 +240,8 @@ glm_vec4_norm2(vec4 v) {
 }
 
 /*!
- * @brief norm (magnitude) of vec4
+ * @brief euclidean norm (magnitude), also called L2 norm
+ *        this will give magnitude of vector in euclidean space
  *
  * @param[in] v vector
  *