Typo (#2020)

* Typo

* Update docs/src/index.md

Co-authored-by: Michael Abbott <32575566+mcabbott@users.noreply.github.com>

Author: trigaten

docs/src/index.md

@@ -9,7 +9,7 @@ Flux is a library for machine learning geared towards high-performance productio
 
 ## Installation
 
-Download [Julia 1.0](https://julialang.org/) or later, if you haven't already. You can add Flux from using Julia's package manager, by typing `] add Flux` in the Julia prompt.
+Download [Julia 1.6](https://julialang.org/) or later, if you haven't already. You can add Flux using Julia's package manager, by typing `] add Flux` in the Julia prompt.
 
 If you have CUDA you can also run `] add CUDA` to get GPU support; see [here](gpu.md) for more details.