Update 03-electroencephalography.md

Added `discontinuous` recordingtype: epoched IS discontinuous (usually), but discontinuous IS NOT epoched.

src/04-modality-specific-files/03-electroencephalography.md

@@ -130,7 +130,7 @@ SHOULD be present:
 | MiscChannelCount | RECOMMENDED. Number of miscellaneous analog channels for auxiliary signals. |
 | TriggerChannelCount | RECOMMENDED. Number of channels for digital (TTL bit level) trigger. |
 | RecordingDuration | RECOMMENDED. Length of the recording in seconds (e.g., 3600). |
-| RecordingType | RECOMMENDED. Defines whether the recording is `continuous` or `epoched`. |
+| RecordingType | RECOMMENDED. Defines whether the recording is `continuous`, `discontinuous`  or `epoched`. |
 | EpochLength | RECOMMENDED. Duration of individual epochs in seconds (e.g., 1) in case of epoched data. |
 | HeadCircumference | RECOMMENDED. Circumference of the participants head, expressed in cm (e.g., 58). |
 | EEGPlacementScheme | RECOMMENDED. Placement scheme of EEG electrodes. Either the name of a standardized placement system (e.g., "10-20") or a list of standardized electrode names (e.g., `["Cz", "Pz"]`). |