swift

98d1dbc2 - [Diags] update `InFlightDiagnostics` doc comment (NFC)

[Diags] update `InFlightDiagnostics` doc comment (NFC) The limit on a single active diagnostic at a time was lifted in 45065f30692d27b9fc3734de2fd9781fa0f460ce. This reflects the currenct behavior.