intro.md: split lines (#188)

intro.md

@@ -7,11 +7,16 @@ If you are interested in contributing to the Patterns catalogue, check out the
 
 ## Design patterns
 
-When developing programs, we have to solve many problems. A program can be viewed as a solution to a problem. It can also be viewed as a collection of solutions to many different problems. All of these solutions work together to solve a bigger problem.
+When developing programs, we have to solve many problems.
+A program can be viewed as a solution to a problem.
+It can also be viewed as a collection of solutions to many different problems.
+All of these solutions work together to solve a bigger problem.
 
 ## Design patterns in Rust
 
-There are many problems that share the same form. Due to the fact that Rust is not object-oriented design patterns vary with respect to other object-oriented programming languages. While the details are different, since they have the same form they can be solved using the same fundamental methods.
+There are many problems that share the same form.
+Due to the fact that Rust is not object-oriented design patterns vary with respect to other object-oriented programming languages.
+While the details are different, since they have the same form they can be solved using the same fundamental methods.
 
 [Design patterns](./patterns/index.md) are methods to solve common problems when writing software.
 
@@ -19,7 +24,8 @@ There are many problems that share the same form. Due to the fact that Rust is n
 
 However, while design patterns give us benefits, anti-patterns create more problems.
 
-[Idioms](./idioms/index.md) are guidelines to follow when coding. They are social norms of the community.
+[Idioms](./idioms/index.md) are guidelines to follow when coding.
+They are social norms of the community.
 You can break them, but if you do you should have a good reason for it.
 
 TODO: Mention why Rust is a bit special - functional elements, type system, borrow checker