Fixed Docs Spelling Mistakes (#9517)

CHANGELOG.md

docs/changes/deprecated_terms.md

docs/community/integrations/graph_stores.md

docs/community/integrations/guidance.md

docs/community/integrations/vector_stores.md

docs/getting_started/concepts.md

docs/getting_started/discover_llamaindex.md

docs/module_guides/models/llms.md

docs/optimizing/advanced_retrieval/query_transformations.md

docs/optimizing/basic_strategies/basic_strategies.md

docs/optimizing/building_rag_from_scratch.md

docs/use_cases/agents.md

examples/gatsby/gatsby_license.txt