fix the documentation of _GF

[ThomasBreuer]

No description provided.

[codecov]

Codecov Report

Merging #1500 (b9968b3) into master (74d138e) will decrease coverage by 0.03%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1500      +/-   ##
==========================================
- Coverage   88.82%   88.80%   -0.03%     
==========================================
  Files          89       89              
  Lines       34346    34346              
==========================================
- Hits        30508    30500       -8     
- Misses       3838     3846       +8     

Impacted Files	Coverage Δ
src/flint/fq_default_extended.jl	100.00% <ø> (ø)

... and 3 files with indirect coverage changes

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[ThomasBreuer]

I do not understand the CI test results:
The test OscarCI / matching: [Oscar#master,Hecke#master,Singular#master] - ubuntu-latest, julia ~1.6.0-0 (pull_request) succeeds, but the test OscarCI / matching: [Oscar#master,Hecke#master,Singular#master] - ubuntu-latest, julia ~1.8.0 fails. However, I think that the differences in the results of the latter test are due to a change in Hecke.jl (thofma/Hecke.jl/pull/1106?) which should affect also the former test.

[thofma]

1.6 does not do the doctests