docs reorganize

docs/src/index.md

@@ -206,7 +206,7 @@ section of the standard library reference.
 | [`sprandn(m,n,d)`](@ref)   | [`randn(m,n)`](@ref)   | Creates a *m*-by-*n* random matrix (of density *d*) with iid non-zero elements distributed according to the standard normal (Gaussian) distribution.                  |
 | [`sprandn(rng,m,n,d)`](@ref) | [`randn(rng,m,n)`](@ref) | Creates a *m*-by-*n* random matrix (of density *d*) with iid non-zero elements generated with the `rng` random number generator                                   |
 
-## Sparse Linear Algebra(@id stdlib-sparse-linalg)
+## [Sparse Linear Algebra](@id stdlib-sparse-linalg)
 
 Sparse matrix solvers call functions from [SuiteSparse](http://suitesparse.com). The following factorizations are available: