Update

linear_algebra.md

@@ -70,7 +70,7 @@ The result, *AB*, will be a 2x4 matrix in which e.g. the top-left element is equ
 
 ```
                                 |7   8   9   10 |
-                                |11  12  13  14 |         
+                                |11  12  13  14 |
                                 |15  16  17  18 |
         |7  8  9  10|
 |1 2 3| |11 12 13 14| = |1 2 3| |74  80  86  92 |
@@ -92,26 +92,26 @@ int main()
     {7,  8,  9,  10},
     {11, 12, 13, 14},
     {15, 16, 17, 18}};
-    
+
   for (int row = 0; row < 2; ++row)
   {
     for (int col = 0; col < 4; ++col)
     {
       int sum = 0;
-      
+
       for (int i = 0; i < 3; ++i)
         sum += A[row][i] * B[i][col];
-        
+
       printf("%d ",sum);
     }
-    
+
     putchar('\n');
   }
-  
+
   return 0;
 }
 ```
 
 ## See Also
 
-- [analytic geometry](analytic_geometry.md)
+- [analytic geometry](analytic_geometry.md)