Make small fixes to compiler series posts

content/blog/00_compiler_intro.md

@@ -40,7 +40,7 @@ Let's go over some preliminary information before we embark on this journey.
 #### The "classic" stages of a compiler
 Let's take a look at the high level overview of what a compiler does.
 Conceptually, the components of a compiler are pretty cleanly separated.
-They are as gollows:
+They are as follows:
 
 1. Tokenizing / lexical analysis
 2. Parsing

content/blog/01_compiler_tokenizing.md

@@ -103,7 +103,7 @@ generate a state machine, and convert it into code to simulate that state machin
 that code as part of our compiler. This way, we have a state machine "hardcoded" into our tokenizer,
 and no conversion of regex to DFAs needs to be done at runtime.
 
-#### The Practice
+### The Practice
 Creating an NFA, and then a DFA, and then generating C++ code are all cumbersome. If we had to
 write code to do this every time we made a compiler, it would get very repetitive, very fast.
 Fortunately, there exists a tool that does exactly this for us - it's called `flex`. Flex