[PATCH/RFC] t800?-blame.sh: retitle uniquely

Currently we have three test files matching t800?-blame.sh.

Rename the latter two to make it easier to spot where additions would go.

Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
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On a related note to J6t's patch, how's the stance on unique titles?
Unique numbers are important for partial test runs, of course,
but unique titles help finding you way through the test.
There are more than the blame.sh ones.

 t/{t8003-blame.sh => t8003-blame-corner-cases.sh}  |    0
 ...8004-blame.sh => t8004-blame-with-conflicts.sh} |    0
 2 files changed, 0 insertions(+), 0 deletions(-)
 rename t/{t8003-blame.sh => t8003-blame-corner-cases.sh} (100%)
 rename t/{t8004-blame.sh => t8004-blame-with-conflicts.sh} (100%)