Clean up informal language in comments and error messages

[eivindjahren]

No description provided.

[Copilot]

Pull request overview

This PR focuses on making comments, docstrings, and user-facing messages more professional and readable across the Python and C/C++ portions of the resdata codebase.

Changes:

• Corrects spelling/grammar in multiple docstrings and inline comments.
• Rewords some comments/error messages to remove informal language (e.g., “uber-hack”, “belly up”, “automagically”).
• Tweaks wording for clarity in documentation blocks describing file formats and APIs.

Reviewed changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
python/resdata/summary/rd_sum.py	Fixes typos and clarifies several docstrings/error messages in summary utilities.
python/resdata/resfile/rd_file.py	Rewords an inline comment in report date handling to be less informal.
python/resdata/resfile/fortio.py	Improves module/class docstrings (but currently introduces a wrong source-file reference; see comment).
python/resdata/grid/rd_grid.py	Cleans up docstrings and removes informal phrasing in grid APIs.
lib/util/vector_template.cpp.in	Fixes spelling in a template comment.
lib/util/util.cpp	Rewords a comment to replace “hack” with “workaround”.
lib/util/test_work_area.cpp	Makes the example path/name more neutral.
lib/util/node_data.cpp	Rewords a comment (but currently understates that the code aborts; see comment).
lib/resdata/rd_util.cpp	Cleans up informal comment wording.
lib/resdata/rd_smspec.cpp	Improves clarity and tone in a multi-line explanatory comment.
lib/resdata/rd_kw_grdecl.cpp	Removes informal emphasis in a comment about parsing robustness.
lib/resdata/rd_grav.cpp	Makes stderr output more professional/neutral.
lib/resdata/rd_file_view.cpp	Fixes typos and improves clarity in a large explanatory comment block.

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[berland]

😍