[dajiaohuang]

Problem

The README, manpage source and CLI help show commands using samples/ex1.sql, samples/ex9.sql and samples/ex62.sql. There is no samples/ directory in the current repository, so those examples cannot locate their input files from the project root. The corresponding files are under t/test-files/.

Change

Correct the paths consistently in doc/pg_format.pod, README and CLI help. README example sections were regenerated with pod2text; unrelated existing README/POD differences were preserved rather than overwritten.

Validation

• Checked all 13 references across the three files: original paths do not exist at master 57cd377321c8474a17ae59a139efa9c4019f21bd; corrected paths all exist.
• Verified the diff in all three files changes only the directory prefix.
• podchecker doc/pg_format.pod, perl -c pg_format, and git diff --check pass (Ubuntu 24.04 / Perl 5.38.2).

The repository SQL examples were not executed or formatted for this path-only correction. Normal CLI formatting was checked separately using small synthetic SQL inputs; no SQL/database execution was used.