fix epg and sources docs section

[jimmydg]

This fixes two errors in the xtream example sections. First one is the sources: section which erroneously includes a name field resulting in this error:

tuliprox  | [2026-01-09T16:29:16Z ERROR tuliprox] Tuliprox error: Can't read the sources-config file: /app/config/source.yml: sources[0]: unknown field `name`, expected `inputs` or `targets` at line 6 column 5

The other error is in the epg section. In one of the sections it misses some fields which are present in other sections of the docs. If you don't change it you get this error:

tuliprox  | [2026-01-09T16:32:51Z ERROR tuliprox] Tuliprox error: Can't read the sources-config file: /app/config/source.yml: sources[0].inputs[0].epg: invalid type: string "http://<snip>/xmltv.php?username=&password=", expected struct EpgConfigDto at line 10 column 12