aspell: whitelist terms from Databrain integration documentation

Fix aspell failures from job run ref fffb631

Added terms:
- multi-tenancy, single-tenancy (tenancy architecture terms)
- usedatabrain (domain name in URLs)
- whitelist, whitelisted, whitelisting (IP filtering terminology)

Author: rahulpat

scripts/aspell-ignore/en/aspell-dict.txt

@@ -1,4 +1,4 @@
-personal_ws-1.1 en 3816
+personal_ws-1.1 en 3822
 AArch
 ACLs
 AICPA
@@ -3827,4 +3827,10 @@ otelcol
 href
 useBaseUrl
 SpanName
-lucene
+lucene
+multi-tenancy
+single-tenancy
+usedatabrain
+whitelist
+whitelisted
+whitelisting