In release package, image path does not match image path specified in definitions

In 192-02-21:

```yaml
eng:
id: 192-02-21
terms:
- type: expression
normative_status: preferred
designation: down time
definition: |-
time interval for which the item is in a down state

image::/assets/images/parts/192/60050-192-F1en.png[Figure 1 - Times related to operation and maintenance]
language_code: eng
```

Here the image file path is:
```
/assets/images/parts/192/60050-192-F1en.png
```

But it is actually this in the release package (the path differs, filename also differs).
```
images/parts/192/192-F1en.png
```

We need to make this consistent.