few enhancements

[pawelru]

• removed unnecessary empty first line in examples as this is actually being rendered
• removed goshawk:: prefix in tests as this is redundant inside goshawk
• fix roxygen warning about documenting package rd file
• close https://github.com/insightsengineering/goshawk/issues/213

Please review the changes carefully and let me know if there is something you don't like.

[github-actions[bot]]

Code Coverage Summary

Filename                           Stmts    Miss  Cover    Missing
-------------------------------  -------  ------  -------  ---------
R/g_boxplot.R                        116     116  0.00%    147-310
R/g_correlationplot.R                129     129  0.00%    251-413
R/g_density_distribution_plot.R       86      86  0.00%    123-234
R/g_lineplot.R                       275     275  0.00%    260-604
R/g_scatterplot.R                    130     130  0.00%    142-310
R/g_spaghettiplot.R                  101     101  0.00%    241-374
R/geom_axes_line.R                   167     167  0.00%    48-360
R/t_summarytable.R                   102     102  0.00%    87-224
R/utils.R                             68      68  0.00%    17-133
TOTAL                               1174    1174  0.00%

Diff against main

Filename             Stmts    Miss  Cover
-----------------  -------  ------  --------
R/g_boxplot.R           +8      +8  +100.00%
R/g_lineplot.R         +19     +19  +100.00%
R/g_scatterplot.R       +7      +7  +100.00%
TOTAL                  +34     +34  +100.00%

Results for commit: 720cd527fe5045874e4e718e245cc2bb412f2429

Minimum allowed coverage is 80%

:recycle: This comment has been updated with latest results