instrumentation: Fix stale version references in documentation

Four per-format version descriptions in cmake-instrumentation.7.rst
still claimed the data version is always 1.0, contradicting both the
authoritative Data Version paragraph (which says 1.1) and the JSON
schemas (which accept minor versions 0 and 1).

Replace the hardcoded version claims with a reference to the Data
Version section, so these lines remain correct as future minor
versions are added without requiring additional doc updates.

Fixes: #27889