fixed a few typos; updated a few links (#276)

Author: superstas

reading/README.md

@@ -9,11 +9,11 @@ There is a ton of links to extra reading and videos through out the material. Oc
 
 ### Blogs
 
-[Going Go](http://www.goinggo.net) - William Kennedy  
-[The acme of foolishness](http://dave.cheney.net) - Dave Cheney  
+[Ardan Labs Blog](https://www.ardanlabs.com/blog/) - William Kennedy  
+[The acme of foolishness](https://dave.cheney.net) - Dave Cheney  
 [The Go Blog](https://blog.golang.org) - Language Team  
 [Ukiah Smith](https://ukiahsmith.com) - Ukiah Smith  
-[Mechanical Sympathy](http://mechanical-sympathy.blogspot.com) - Martin Thompson  
+[Mechanical Sympathy](https://mechanical-sympathy.blogspot.com) - Martin Thompson  
 [Go Documentation References](https://golang.org/doc/#references) - Language Team
 
 ### Interviews

topics/go/language/constants/README.md

@@ -6,16 +6,16 @@ Constants are a way to create a named identifier whose value can never change. T
 
 * Constants are not variables.
 * They exist only at compilation.
-* Untyped constants can be implictly converted where typed constants and variables can't.
+* Untyped constants can be implicitly converted where typed constants and variables can't.
 * Think of untyped constants as having a Kind, not a Type.
 * Learn about explicit and implicit conversions.
 * See the power of constants and their use in the standard library.
 
 ## Links
 
-https://golang.org/ref/spec#Constants  
-http://blog.golang.org/constants  
-http://www.goinggo.net/2014/04/introduction-to-numeric-constants-in-go.html
+[Constants specification](https://golang.org/ref/spec#Constants)    
+[Constants](https://blog.golang.org/constants) - Rob Pike    
+[Introduction To Numeric Constants In Go](https://www.ardanlabs.com/blog/2014/04/introduction-to-numeric-constants-in-go.html) - William Kennedy    
 
 ## Code Review
 

topics/go/language/embedding/README.md

@@ -1,18 +1,18 @@
 ## Embedding
 
-Embedding types provides the final piece of sharing and reusing state and behavior between types. Through the use of inner type promotion, an inner type's fields and methods can be directly accessed by references of the outer type.
+Embedding types provide the final piece of sharing and reusing state and behavior between types. Through the use of inner type promotion, an inner type's fields and methods can be directly accessed by references of the outer type.
 
 ## Notes
 
-* Embedding types allows us to share state or behavior between types.
+* Embedding types allow us to share state or behavior between types.
 * The inner type never loses its identity.
 * This is not inheritance.
 * Through promotion, inner type fields and methods can be accessed through the outer type.
 * The outer type can override the inner type's behavior.
 
 ## Links
 
-http://www.goinggo.net/2014/05/methods-interfaces-and-embedded-types.html  
+[Methods, Interfaces and Embedded Types in Go](https://www.ardanlabs.com/blog/2014/05/methods-interfaces-and-embedded-types.html) - William Kennedy    
 [Embedding is not inheritance](https://rakyll.org/typesystem/) - JBD  
 
 ## Code Review

topics/go/language/exporting/README.md

@@ -4,14 +4,14 @@ Packages contain the basic unit of compiled code. They define a scope for the id
 
 ## Notes
 
-* Code in go is complied into packages and then linked together.
+* Code in go is compiled into packages and then linked together.
 * Identifiers are exported (or remain unexported) based on letter-case.
 * We import packages to access exported identifiers.
 * Any package can use a value of an unexported type, but this is annoying to use.
 
 ## Links
 
-http://www.goinggo.net/2014/03/exportedunexported-identifiers-in-go.html  
+[Exported/Unexported Identifiers In Go](https://www.ardanlabs.com/blog/2014/03/exportedunexported-identifiers-in-go.html) - William Kennedy    
 
 ## Code Review