Adjust SIF docx example

The example file needs ot be updated to reflect changes in workflow:

1. Remove `samplenaam` metadata, see #198
2. Adjust `INV` and `PMA` utterance order from single/single to:
```
INV:
1 | PMA:
2 | PMA:
3 | PMA:
INV:
4 | PMA:
5 | PMA:
6 | PMA:
INV:
7 | PMA:
8 | PMA:
9 | PMA:
INV:
10 | PMA:
11 | PMA:
12 | PMA:
INV:
13 | PMA:
14 | PMA:
15 | PMA:
INV:
16 | PMA:
17 | PMA:
18 | PMA:
INV:
19 | PMA:
20 | PMA:
21 | PMA:
INV:
22 | PMA:
23 | PMA:
24 | PMA:
INV:
25 | PMA:
26 | PMA:
27 | PMA:
```

Locate the SIF DOCX example in the repository and review its current metadata and utterance order. Remove the `samplenaam` metadata and update the `INV`/`PMA` sequence to match the 27-item pattern in the issue; done means the example reflects the stated workflow changes.

Written by the indexing model from the issue text.