Further overhaul of package line comments.

core/odin/ast/ast.odin

@@ -1,4 +1,4 @@
-// package ast implements the Abstract Syntax Tree for the Odin parser packages.
+// Abstract Syntax Tree for the `Odin` parser packages.
 package odin_ast
 
 import "core:odin/tokenizer"

core/odin/doc-format/doc_format.odin

@@ -1,4 +1,4 @@
-// package doc-format implements the .odin-doc file format, as used by these package docs at pkg.odin-lang.org.
+// The `.odin-doc` file format, as used by these package docs at `pkg.odin-lang.org`.
 package odin_doc_format
 
 import "core:mem"

core/odin/doc.odin

@@ -1,2 +1,2 @@
-// package odin implements a lexer and parser for the Odin language for the purposes of writing tooling.
+// A lexer and parser for the `Odin` language for the purposes of writing tooling.
 package odin

core/odin/parser/parser.odin

@@ -1,4 +1,4 @@
-// package parser implements the *.odin file parser to be used in tooling.
+// The `Odin` file parser to be used in tooling.
 package odin_parser
 
 import "core:odin/ast"

core/odin/tokenizer/tokenizer.odin

@@ -1,4 +1,4 @@
-// package tokenizer implements the tokenizer (lexer) for *.odin files, used to create tooling.
+// The tokenizer (lexer) for `Odin` files, used to create tooling.
 package odin_tokenizer
 
 import "core:fmt"