docs(examples): Expand on lexing vs parsing

[epage]

This doesn't do location stuff yet but hopefully this can help.

[coveralls]

Pull Request Test Coverage Report for Build 13595944706

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage increased (+0.4%) to 40.983%

---

Files with Coverage Reduction	New Missed Lines	%
src/parser.rs	1	45.75%

Totals
Change from base Build 13469357741:	0.4%
Covered Lines:	1343
Relevant Lines:	3277

---

💛 - Coveralls

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 40.98%. Comparing base (70e1f43) to head (ab9830d).
Report is 12 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #754      +/-   ##
==========================================
+ Coverage   40.53%   40.98%   +0.44%     
==========================================
  Files          25       25              
  Lines        3276     3277       +1     
==========================================
+ Hits         1328     1343      +15     
+ Misses       1948     1934      -14     

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