Update .git-blame-ignore-revs (#17582)

Signed-off-by: Josh Soref <[email protected]>
Co-authored-by: Petr <[email protected]>

Author: jsoref

.git-blame-ignore-revs

@@ -1,5 +1,9 @@
+# Because this repository uses squash/rebase merges, commits added to a branch
+# referencing earlier commits in the same branch and squash/rebased merged as part of a PR
+# will need to be rewritten in a subsequent PR to the corresponding squashed/rebased commit SHAs.
+
 # Format src/Compiler/Checking/CheckComputationExpressions.fs, https://github.com/dotnet/fsharp/pull/16512
-603a310cdfd9902ec1d29b399377dcc9ac56235b
+0318afd91f38533879cc89d598e0431c312ad57e
 
 # Spelling, https://github.com/dotnet/fsharp/pull/16212
-823d5e99fdd13f696ea8fe572d502e5fa68f6fd1
+23e91e1322363a7e9c34baaeabbf0391c4b7eafd