docs: fix typos in comments, docs, and log messages

[redstartechno]

What problem does this solve?

Fixes 16 spelling typos across the codebase — in code comments, documentation prose, and a few
log/error message strings — found with codespell.

How do you know this is a real problem?

Running codespell over the source (excluding generated *.pb.go/*.pulsar.go, vendored code,
and binaries) flags these misspellings. Examples: propogated→propagated, directy→directly,
inbetween→in between, authrority→authority, unabled to unmarhsal→unable to unmarshal,
subsytems→subsystems, withdrawl→withdrawal. Each misspelled token occurs exactly once in
the repo, so none is relied upon elsewhere.

How does this solve the problem?

Corrects each spelling. The full list (file → fix):

• decentralized-api/internal/server/public/get_epoch.go — comment: indroduced→introduce
• inference-chain/app/ante_validation.go — comment: propogated→propagated
• inference-chain/x/inference/keeper/poc_period_validation.go — comment: propogated→propagated
• inference-chain/x/inference/keeper/bridge_native.go — comment: directy→directly
• inference-chain/x/inference/keeper/msg_server_validation.go — comment: inbetween→in between
• inference-chain/x/inference/keeper/bridge_transaction_split_test.go — comment: Get's→Gets
• testermint/src/test/kotlin/StreamVestingTests.kt — comment: unfortunatelly→unfortunately
• decentralized-api/internal/validation/proposal.md — prose: woker→worker
• testermint/README.md — prose: subsytems→subsystems
• testermint/mcp_log_examiner/.../logging_overview.md — prose: systen→system
• testermint/mcp_log_examiner/.../step_by_step.md — prose: regarging→regarding
• inference-chain/cmd/inferenced/cmd/sync_snapshots.go — error string: wih→with
• inference-chain/x/inference/keeper/developer_stats_aggregation.go — log string: unabled to unmarhsal→unable to unmarshal
• inference-chain/x/inference/types/message_register_model.go — error string: authrority→authority
• testermint/src/main/kotlin/DockerGroup.kt — log string: cluser→cluster
• testermint/src/test/kotlin/CollateralTests.kt — log string: withdrawl→withdrawal

What risks does this introduce? How can we mitigate them?

Minimal. Comment and documentation edits cannot affect behavior. The few changes to string
literals are limited to human-readable log/error text; each misspelled string appears only once
in the repo, so no test or other code asserts the old spelling. No identifiers, function names,
struct fields, or proto definitions were touched, so nothing requires regeneration.

How do you know this PR fixes the problem?

Re-running codespell with the same scope no longer reports any of these 16 items. Remaining
codespell output consists only of false positives (e.g. the SQLite type prefix DOUB, the
@OptIn/@AfterAll annotations, short identifiers like ege) which were intentionally left
unchanged.

Which components are affected?

Documentation and comments across decentralized-api, inference-chain, and testermint, plus
three human-readable log/error strings. No runtime logic changes.

Testing & evidence

No code paths changed; behavior is unaffected, so automated tests are not applicable. Verification
was done with codespell (before: 16 of these flagged; after: 0). Comment/string edits compile
trivially as they do not alter program structure.

[x0152]

@redstartechno Hi
Thanks for the contributions!

Could you please combine (#1302, #1301, #1300, #1299, #1297) into a single pr?

[redstartechno]

Closing in favor of #1306, which combines this and the other docs fixes into a single PR per the maintainer's request. Thanks!