Fix typos

_literate/01_why_Julia.jl

@@ -445,7 +445,7 @@
 
 # ## Multiple Dispatch
 
-# I think that this is the **real gamechanger of Julia language**:
+# I think that this is the **real game changer of Julia language**:
 # The ability to define **function behavior** across many combinations of argument types via [**multiple dispatch**](https://en.wikipedia.org/wiki/Multiple_dispatch).
 # **Multiple dispatch** is a feature that allows a function or method to be **dynamically dispatched** based on the run-time (dynamic) type or,
 # in the more general case, some other attribute of more than one of its arguments.

index.md

@@ -116,7 +116,7 @@ Here is a (not complete) list of other Turing tutorials:
 2. [**Statistical Rethinking - Turing Models**](https://statisticalrethinkingjulia.github.io/TuringModels.jl/): Julia versions of the Bayesian models described in *Statistical Rethinking* Edition 1 (McElreath, 2016) and Edition 2 (McElreath, 2020)
 3. [**Håkan Kjellerstrand Turing Tutorials**](http://hakank.org/julia/turing/): a collection of Julia Turing models
 
-I also have a free and opensource graduate course on Bayesian Statistics with Turing and Stan code.
+I also have a free and open source graduate course on Bayesian Statistics with Turing and Stan code.
 You can find it at [`storopoli/Bayesian-Statistics`](https://github.com/storopoli/Bayesian-Statistics).
 
 ## How to cite