chore: use markdown raw links

llms.txt

@@ -6,22 +6,23 @@
 Things to remember to write awk script with zawk:
 
 - standard library: text, math, datetime, crypto, parser, encode/decode, ID, KV, SQLite/MySQL, Redis/NATS etc.
-- csv/tsv built-in support with `zawk -i csv/tsv `
+- csv/tsv built-in support with `zawk -i csv/tsv`
+- zawk is the successor of frawk, and all frawk scripts can run in zawk 
 
 ## Docs
 
-- [zawk Overview](https://github.com/linux-china/zawk/blob/master/info/overview.md): zawk overview and how it differs from Awk
-- [FAQ](https://github.com/linux-china/zawk/blob/master/info/faq.md): FAQ about zawk
+- [zawk Overview](https://raw.githubusercontent.com/linux-china/zawk/refs/heads/master/info/overview.md): zawk overview and how it differs from Awk
+- [FAQ](https://raw.githubusercontent.com/linux-china/zawk/refs/heads/master/info/faq.md): FAQ about zawk
 
 ## API
 
-- [zawk Standard Library](https://github.com/linux-china/zawk/blob/master/info/stdlib.md): zawk standard library
-- [zawk Builtin Functions and Commands](https://github.com/linux-china/zawk/blob/master/info/stdlib.md): zawk Builtin Functions and Commands
+- [zawk Standard Library](https://raw.githubusercontent.com/linux-china/zawk/refs/heads/master/info/stdlib.md): zawk standard library
+- [zawk Builtin Functions and Commands](https://raw.githubusercontent.com/linux-china/zawk/refs/heads/master/info/reference.md): zawk Builtin Functions and Commands
 
 ## Examples
 
-- [AWK Examples](https://github.com/linux-china/zawk/blob/master/info/examples.md): Some examples of AWK scripts
+- [AWK Examples](https://raw.githubusercontent.com/linux-china/zawk/refs/heads/master/info/examples.md): Some examples of AWK scripts
 
 ## Optional
 
-- [AWK cheat sheet](https://cheatsheets.zip/awk): awk cheat sheet
+- [AWK cheat sheet](https://raw.githubusercontent.com/Fechin/reference/refs/heads/main/source/_posts/awk.md): awk cheat sheet