Fixed typos in ch12/readme

Author: vmirly

ch12/README.md

@@ -1,12 +1,11 @@
 Python Machine Learning - Code Examples
 
 
-##  Chapter 12: Implementing a Multilayer Artificial Neural
-Network from Scratch
+##  Chapter 12: Implementing a Multilayer Artificial Neural Network from Scratch
 
 ### Chapter Outline
 
-- Modeling complex functions with arti cial neural networks
+- Modeling complex functions with artificial neural networks
   - Single-layer neural network recap
   - Introducing the multilayer neural network architecture
   - Activating a neural network via forward propagation
@@ -48,4 +47,4 @@ In addition to the code examples, I added a table of contents to each Jupyter no
 ![](../ch02/images/jupyter-example-2.png)
 
 
-When I was creating these notebooks, I was hoping to make your reading (and coding) experience as convenient as possible! However, if you don't wish to use Jupyter Notebooks, I also converted these notebooks to regular Python script files (`.py` files) that can be viewed and edited in any plaintext editor. 
+When I was creating these notebooks, I was hoping to make your reading (and coding) experience as convenient as possible! However, if you don't wish to use Jupyter Notebooks, I also converted these notebooks to regular Python script files (`.py` files) that can be viewed and edited in any plaintext editor.