Fix various spelling errors still found in code

[ottok]

dont -> don't
refered -> referred

Merging this would allow to decrease the size of the downstream patch at https://salsa.debian.org/mariadb-team/mariadb-10.5/-/blob/master/debian/patches/fix-spelling.patch

[mrambacher]

LGTM

[ottok]

Travis-CI job timed out: https://travis-ci.org/github/facebook/rocksdb/jobs/750731505

Another fails on:

The command "case $TEST_GROUP in platform_dependent) OPT=-DTRAVIS V=1 ROCKSDBTESTS_PLATFORM_DEPENDENT=only make -j4 all_but_some_tests check_some ;; 1) OPT=-DTRAVIS V=1 ROCKSDBTESTS_PLATFORM_DEPENDENT=exclude ROCKSDBTESTS_END=backupable_db_test make -j4 check_some ;; 2) OPT="-DTRAVIS -DROCKSDB_NAMESPACE=alternative_rocksdb_ns" V=1 make -j4 tools && OPT="-DTRAVIS -DROCKSDB_NAMESPACE=alternative_rocksdb_ns" V=1 ROCKSDBTESTS_PLATFORM_DEPENDENT=exclude ROCKSDBTESTS_START=backupable_db_test ROCKSDBTESTS_END=db_universal_compaction_test make -j4 check_some ;; 3) OPT=-DTRAVIS LIB_MODE=shared V=1 ROCKSDBTESTS_PLATFORM_DEPENDENT=exclude ROCKSDBTESTS_START=db_universal_compaction_test ROCKSDBTESTS_END=table_properties_collector_test make -j4 check_some ;; 4) OPT=-DTRAVIS V=1 ROCKSDBTESTS_PLATFORM_DEPENDENT=exclude ROCKSDBTESTS_START=table_properties_collector_test make -j4 check_some ;; esac" exited with 2.

Unlikely to be related to the changes in this PR. I recommend merging despite failing tests.

[facebook-github-bot]

@jay-zhuang has imported this pull request. If you are a Facebook employee, you can view this diff on Phabricator.

[facebook-github-bot]

@ottok has updated the pull request. You must reimport the pull request before landing.

[facebook-github-bot]

@jay-zhuang has imported this pull request. If you are a Facebook employee, you can view this diff on Phabricator.

[facebook-github-bot]

@jay-zhuang merged this pull request in acc9679.