Added spellchecker.

.cspell

@@ -0,0 +1,173 @@
+APIV
+Boxplot
+Bobg
+Boundsdouble
+CBOR
+DNFOF
+Decompounder
+Downsample
+Downsampling
+Ewma
+Fielddata
+Formattable
+Fragmenter
+Geohex
+Gsub
+Intertransport
+Jelinek
+Kuromoji
+Lovins
+Lucene
+Millis
+Multisearch
+Nanos
+Nori
+ONNX
+OPENSEARCH
+OSCPU
+Oversample
+Rebalance
+Reindex
+Rethrottle
+Rolespan
+Rollup
+Rollups
+Slowlog
+Sorani
+Stringifiedboolean
+Stringifiedinteger
+Tfidf
+Tika
+Translog
+Unmanaged
+Yrtsd
+aarch
+actiongroup
+actiongroups
+aggregatable
+asciifolding
+authc
+authinfo
+authtoken
+autocut
+backendroles
+beider
+boxplot
+caverphone
+charfilters
+chisquared
+chuhlomin
+cpuacct
+daitch
+dangoslen
+dashboardsinfo
+decompounder
+dedup
+determinized
+docvalue
+downsampling
+evals
+ewma
+faiss
+fielddata
+forcemerge
+fragmenter
+freqs
+generateonbehalfoftoken
+geohash
+geohex
+geoip
+geotile
+gsub
+haasephonetik
+heteroscedastic
+homoscedastic
+hotthreads
+hybridfs
+integ
+internalusers
+kibanainfo
+kibanaserver
+koelnerphonetik
+kstem
+kuromoji
+languageset
+lucene
+lycheeverse
+marvinpinto
+metaphone
+mget
+millis
+mlockall
+mmap
+mmapfs
+mmdb
+mokotoff
+msearch
+mtermvectors
+mult
+multitenancy
+mxyz
+nanos
+nbest
+nfkc
+ngram
+niofs
+nmslib
+nodeattrs
+nodesdn
+noops
+nori
+nysiis
+opendistro
+opensearch
+opensearchproject
+ords
+oversample
+performanceanalyzer
+permissionsinfo
+pipefail
+prefilter
+prirep
+rawfile
+readingform
+rebalance
+recoverysource
+reindex
+relo
+reloadcerts
+remotestore
+rethrottle
+rolesmapping
+rollup
+rollups
+romaji
+roundtrips
+ruleset
+scriptless
+securityconfig
+slowlog
+slurpfile
+snapshotted
+softmax
+sslinfo
+stoptags
+stopwords
+subqueries
+subschemas
+subword
+tdigest
+tenantinfo
+termvectors
+tfidf
+tokenfilters
+translog
+unigrams
+unmatch
+untriaged
+updateable
+upsert
+urldecode
+vectory
+whoamiprotected
+wordnet

CHANGELOG.md

@@ -22,6 +22,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - Added `eslint-plugin-eslint-comments` ([#333](https://github.com/opensearch-project/opensearch-api-specification/pull/333))
 - Added `distribution` field to `OpenSearchVersionInfo` ([#336](https://github.com/opensearch-project/opensearch-api-specification/pull/336)) 
 - Added `created_time` and `last_updated_time` to `ml.get_model_group@200` ([#342](https://github.com/opensearch-project/opensearch-api-specification/pull/342))
+- Added spellcheck linter ([#341](https://github.com/opensearch-project/opensearch-api-specification/pull/341))
 
 ### Changed
 
@@ -38,6 +39,9 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
 - Fixed GitHub pages ([#215](https://github.com/opensearch-project/opensearch-api-specification/pull/215))
 - Fixed missing 201 response in `/{index}/_doc/{id}` ([#331](https://github.com/opensearch-project/opensearch-api-specification/pull/331))
+- Fixed `SlowlogThresholds` ([#341](https://github.com/opensearch-project/opensearch-api-specification/pull/341))
+- Fixed `from_address` in notifications ([#341](https://github.com/opensearch-project/opensearch-api-specification/pull/341))
+- Fixed `pages_processed` in rollups ([#341](https://github.com/opensearch-project/opensearch-api-specification/pull/341))
 
 ### Security
 

eslint.config.mjs

@@ -6,6 +6,7 @@ import pluginJs from '@eslint/js'
 import pluginLicenseHeader from 'eslint-plugin-license-header'
 import pluginTs from '@typescript-eslint/eslint-plugin'
 import pluginYml from 'eslint-plugin-yml'
+import pluginCspell from '@cspell/eslint-plugin'
 
 export default [
   pluginJs.configs.recommended,
@@ -24,7 +25,8 @@ export default [
     plugins: {
       '@typescript-eslint': pluginTs,
       'license-header': pluginLicenseHeader,
-      'eslint-comments': pluginComments
+      'eslint-comments': pluginComments,
+      '@cspell': pluginCspell
     },
     rules: {
       ...pluginJs.configs.recommended.rules,
@@ -92,6 +94,7 @@ export default [
           '*/'
         ]
       ],
+      '@cspell/spellchecker': ['error', { customWordListFile: '.cspell', autoFix: true }]
     }
   },
   ...pluginYml.configs['flat/standard'],
@@ -101,12 +104,14 @@ export default [
       parser: parserYml
     },
     plugins: {
-      yml: pluginYml
+      'yml': pluginYml,
+      '@cspell': pluginCspell
     },
     rules: {
       'yml/no-empty-document': 'off',
       'yml/quotes': 'off',
-      'yml/plain-scalar': 'off'
+      'yml/plain-scalar': 'off',
+      '@cspell/spellchecker': ['error', { customWordListFile: '.cspell', autoFix: true }]
     }
   }
 ]