reword linear algebra page

Author: pulkitkrishna00

docs/computer-science/math/linear-algebra/index.md

@@ -7,6 +7,6 @@ sidebar_position: 4
 
 - [Linear Algebra](https://ocw.mit.edu/courses/mathematics/18-06sc-linear-algebra-fall-2011/) (Only Unit 1)
 
-Once **Unit 1** needs to be done as a part of Core Math. Rest of the course is an [Advanced Math](../../advanced-cs/electives/index.md#advanced-math) elective course.
+Only **Unit 1** needs to be completed as a part of Core Math. The rest of the material is an elective course in Advanced Math.
 
 This course covers matrix theory and linear algebra, emphasizing topics useful in other disciplines such as physics, economics and social sciences, natural sciences, and engineering.