chore: tidy cSpell config; fix two doc typos (#779)

- Ignore data/export trees via cSpell.ignorePaths: parsedmarc/resources/**
  (maps tooling holds thousands of intentional foreign-language classifier
  keywords + bundled data), plus samples/** and dashboards/** (report
  samples and dashboard exports). These are data, not whitelist vocabulary,
  so excluding them keeps the editor quiet without bloating the word list.
- Add the remaining genuine false-positives across code, docs, CI
  workflows, and editor config to cSpell.words (technical terms, library
  names, SQL/identifier tokens, brand/operator and multilingual examples
  from AGENTS.md, plus charliermarsh/junitxml/mktemp/pipefail/seanthegeek).
- Fix two genuine typos found while triaging rather than whitelisting
  them: "maidir" -> "maildir" and "connexion" -> "connection".

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

docs/source/elasticsearch.md

@@ -125,7 +125,7 @@ server.ssl.key: /etc/kibana/kibana.key
 ```
 
 :::{note}
-For more security, you can configure Kibana to use a local network connexion
+For more security, you can configure Kibana to use a local network connection
 to elasticsearch :
 ```text
 elasticsearch.hosts: ['https://SERVER_IP:9200']

docs/source/usage.md

@@ -522,7 +522,7 @@ The full set of configuration options are:
   - `mode` - str: The GELF transport type to use. Valid modes: `tcp`, `udp`, `tls`
 
 - `maildir`
-  - `maildir_path` - str: Full path for mailbox maidir location (Default: `INBOX`)
+  - `maildir_path` - str: Full path for mailbox maildir location (Default: `INBOX`)
   - `maildir_create` - bool: Create maildir if not present (Default: False)
 
 - `webhook` - Post the individual reports to a webhook url with the report as the JSON body