Update how-to-pronunciation-assessment.md

Author: sally-baolian

articles/cognitive-services/Speech-Service/how-to-pronunciation-assessment.md

@@ -44,8 +44,8 @@ This table lists some of the key configuration parameters for pronunciation asse
 | Parameter | Description | 
 |-----------|-------------|
 | `ReferenceText` | The text that the pronunciation will be evaluated against. | 
-| `GradingSystem` | The point system for score calibration. The `FivePoint` system gives a 0-5 floating point score, and `HundredMark` gives a 0-100 floating point score. | 
-| `Granularity` | Determines the lowest level of evaluation granularity. Scores for levels above or equal to the minimal value are returned.  Accepted values are `Phoneme`, which shows the score on the full text, word, syllable, and phoneme level, `Syllable`, which shows the score on the full text, word, and syllable level, `Word`, which shows the score on the full text and word level, or `FullText`, which shows the score on the full text level only. The provided full reference text can be a word, sentence, or paragraph, and it depends on your input reference text.| 
+| `GradingSystem` | The point system for score calibration. The `FivePoint` system gives a 0-5 floating point score, and `HundredMark` gives a 0-100 floating point score. Default: `FivePoint`. | 
+| `Granularity` | Determines the lowest level of evaluation granularity. Scores for levels above or equal to the minimal value are returned.  Accepted values are `Phoneme`, which shows the score on the full text, word, syllable, and phoneme level, `Syllable`, which shows the score on the full text, word, and syllable level, `Word`, which shows the score on the full text and word level, or `FullText`, which shows the score on the full text level only. The provided full reference text can be a word, sentence, or paragraph, and it depends on your input reference text. Default: `Phoneme`.| 
 | `EnableMiscue` | Enables miscue calculation when the pronounced words are compared to the reference text. If this value is `True`, the `ErrorType` result value can be set to `Omission` or `Insertion` based on the comparison. Accepted values are `False` and `True`. Default: `False`. |
 | `ScenarioId` | A GUID indicating a customized point system. |