Fix broken links in docs

[jrinder42]

Fixes broken links / anchors in the documents

This is described further in issue #302

Here is a list of all of the broken links I have caught thus far. This is by no means an exhaustive list.

lmql/docs/docs/language/reference.md

Broken anchors in the reference.md file

• [ ] #python-api -- don't know how to fix this
• [x] #legacy-syntax
• [x] #modern-syntax

lmql/docs/features/3-models.md

Broken link in the 3-models.md file

• [x] ../docs/models/llama.cpp.html --
• [x] ../docs/models/openai.html
• [x] ../docs/models/hf.html

lmql/docs/docs/models/hf.md

Broken anchor / link in the hf.md file

• [x] #in-process-model-loading
• [x] ../lib/generations.md#lmql-llm-objects

lmql/docs/docs/lib/generations.md

Broken anchors in the generations.md file

• [x] #lmql-generate
• [x] #lmql-score
• [x] #lmql-set_default_model
• [x] #llm-generate_sync
• [x] #llm-generate
• [x] #llm-score-sync
• [x] #llm-score

[jrinder42]

It seems that GitHub markdown is not compatible with how the docs are built, hence there is a difference in what links work and what links do not work.