fixed title case and add kl

html/algebra/linear/vectors.html

@@ -42,10 +42,10 @@
 </div>
 <div class="definition" id="definition-vector-form-of-a-line">
     <div class="title">
-        vector form of a line
+        Vector Form of a Line
     </div>
     <div class="content">
-        Suppose that \( d , p \) are vectors, then we say that the set \( l := \left \lbrace x : x = t d + p , \text{ for some } t \in \mathbb{R} \right \rbrace \) is a line and say that the vector equation for the line is
+        Suppose that \( d , p \) are <a class="knowledge-link" href="/algebra/linear/vectors.html#definition-vector">vectors</a>, then we say that the set \( l := \left \lbrace x : x = t d + p , \text{ for some } t \in \mathbb{R} \right \rbrace \) is a line and say that the vector equation for the line is
         <div class="centered-content">
             \( x = t d + p \)
         </div>We also say that \( d \) is the direction vector for \( l \)