Fix: Fixed typos (#745)

Author: gvweshg

docs/advanced/patterns_by_usecase.md

@@ -571,7 +571,7 @@ function handle(event: UserEvent) {
 
 <details>
   <summary>
-  Take care: TypeScript does not narrow the type of a Discriminated Union on the basis of typeof checks. The type guard has to be on the value of a key and not it's type.
+  Take care: TypeScript does not narrow the type of a Discriminated Union on the basis of typeof checks. The type guard has to be on the value of a key and not its type.
   </summary>
 
 ```ts
@@ -589,7 +589,7 @@ function handle(event: UserEvent) {
 }
 ```
 
-The above example does not work as we are not checking the value of `event.value` but only it's type. Read more about it [microsoft/TypeScript#30506 (comment)](https://github.com/microsoft/TypeScript/issues/30506#issuecomment-474858198)
+The above example does not work as we are not checking the value of `event.value` but only its type. Read more about it [microsoft/TypeScript#30506 (comment)](https://github.com/microsoft/TypeScript/issues/30506#issuecomment-474858198)
 
 </details>
 

docs/advanced/utility-types.md

@@ -8,7 +8,7 @@ We will assume knowledge of utility types covered in the sister project [`typesc
 
 If you intend to maintain a large TS codebase/a nontrivial React+TS library, **we strongly recommend exploring these utilities** so that you don't reinvent the wheel and/or lose sanity trying to do so. Studying their code can also teach you a lot of advanced TS that is not covered here.
 
-I also recommend have a good working knowledge of how to construct the inbuilt utility types from scratch. See [Dr. Rauschmayer's guide](https://2ality.com/2020/06/computing-with-types.html) for a concise introduction.
+I also recommend having a good working knowledge of how to construct the inbuilt utility types from scratch. See [Dr. Rauschmayer's guide](https://2ality.com/2020/06/computing-with-types.html) for a concise introduction.
 
 A level of comfort with **generic types** is therefore required. Here are some helpful resources:
 

docs/hoc/index.md

@@ -8,7 +8,7 @@ title: HOC Cheatsheet
 
 - We will map closely to [the official docs on HOCs](https://reactjs.org/docs/higher-order-components.html) initially
 - While hooks exist, many libraries and codebases still have a need to type HOCs.
-- Render props may be considered in future
+- Render props may be considered in the future
 - The goal is to write HOCs that offer type safety while not getting in the way.
 
 Here is a base HOC example you can copy right away: