docs(dbapi): fix pyodbc connect method example

[popsiclelmlm]

Description

Summary

• Updates the DBAPI instrumentation examples for pyodbc to wrap the module-level connect callable instead of Connection.

Reproduction

• In Instrumentation dbapi is not capturing the odbc database commands #707, the reporter used trace_integration(pyodbc, "Connection", "odbc") from the docs and did not see DBAPI spans.
• Another user confirmed that switching the wrapped method name to "connect" made instrumentation work.

Root cause

• trace_integration / wrap_connect wrap the DBAPI module function that creates connections. For pyodbc, that function is pyodbc.connect; using Connection in the example can lead users to wrap the wrong target.

Changes

• Replace the pyodbc examples in the DBAPI instrumentation docs from "Connection" to "connect".

Tests

• python3 -m compileall -q instrumentation/opentelemetry-instrumentation-dbapi/src/opentelemetry/instrumentation/dbapi
• git diff --check
• Not run: tox / uv based test environments, because neither tox nor uv is available in this local environment.

Screenshots/Logs

• Not applicable.

Fixes #707

Type of change

• Bug fix (non-breaking change which fixes an issue)
• This change requires a documentation update

How Has This Been Tested?

• python3 -m compileall -q instrumentation/opentelemetry-instrumentation-dbapi/src/opentelemetry/instrumentation/dbapi
• git diff --check

Does This PR Require a Core Repo Change?

• No.

Checklist:

• Followed the style guidelines of this project
• Changelogs have been updated
• Unit tests have been added
• Documentation has been updated