Swiss phone number format not recognized [FR]

Offending input: `Téléphone : 021/821’51’08`
Command:
```bash
curl -XPOST http://0.0.0.0:8000/parse --data 'locale=fr_CH&text="Téléphone : 021/821’51’08"'
```
Current output:
```json
[
{
"body": "021/821",
"dim": "number",
"end": 20,
"latent": false,
"start": 13,
"value": {
"type": "value",
"value": 0.025578562728380026
}
},
{
"body": "51",
"dim": "number",
"end": 23,
"latent": false,
"start": 21,
"value": {
"type": "value",
"value": 51
}
},
{
"body": "08\"",
"dim": "duration",
"end": 27,
"latent": false,
"start": 24,
"value": {
"normalized": {
"unit": "second",
"value": 8
},
"second": 8,
"type": "value",
"unit": "second",
"value": 8
}
}
]
```