Fixing links on page "101 samples"

[n7800]

On the page "101 Samples" a lot of non-working links have been fixed:

• Old functions:
  • git_clone_into (was removed in baac01c3c9).
  • git_oid_allocfmt (was removed in 66ac3cec52).
  • git_config_get_multivar replaced by git_config_get_multivar_foreach
• Deprecated functions/types:
  • git_otype
  • git_blob_filtered_content
  • git_blob_create_fromworkdir
  • git_blob_create_fromdisk
  • git_blob_create_frombuffer
• Repetition of the lines.

I see that in the links it is mainly use #HEAD, but in some it did not work, and I just indicated main.

I don’t know whether the correction of links is needed everywhere, or some kind of correction of a redirection (maybe docs\search-index\main.json)? In this case, please make corrections as it should.