chore: add buzhash, codecs, deduplication to pln-ignore.txt

Author: lidel

.github/styles/README.md

@@ -0,0 +1,25 @@
+# Vale Styles
+
+This directory contains Vale linting configuration for ipfs-docs.
+
+## Spelling Rules
+
+There are two spelling systems:
+
+1. **`Vocab/ipfs-docs-vocab/accept.txt`** - General Vale vocabulary
+2. **`pln-ignore.txt`** - Custom ignore file for `docs/PLNSpelling.yml`
+
+### Fixing PLNSpelling Errors
+
+When CI fails with `[docs.PLNSpelling] Did you really mean 'word'?`:
+
+1. Add the word to **`pln-ignore.txt`** (lowercase)
+2. Do NOT add to `Vocab/accept.txt` - that file is for other Vale rules
+
+The `PLNSpelling.yml` rule explicitly references `pln-ignore.txt`:
+
+```yaml
+extends: spelling
+ignore:
+  - pln-ignore.txt
+```

.github/styles/pln-ignore.txt

@@ -27,6 +27,7 @@ boolean
 Bootstrappers
 boxo
 browserify
+buzhash
 caddy
 Caddyfile
 callout
@@ -41,6 +42,7 @@ clis
 cmds
 cnames
 codec
+codecs
 codecov
 coinlist
 composable
@@ -56,6 +58,7 @@ dapps
 data('s)
 datastore
 deduplicate
+deduplication
 Denylist
 denylist
 dep