Merge #16186: doc/lint: Fix spelling errors identified by codespell 1.15.0

b748bf6f50dda6bb57eadf697edc320b2695e01a Fix spelling errors identified by codespell 1.15.0 (Ben Woosley)

Pull request description:

  Note all changes are to comments / documentation.

  After this commit, the only remaining output is:

  ```
    $ test/lint/lint-spelling.sh
    src/test/base32_tests.cpp:14: fo  ==> of, for
    src/test/base64_tests.cpp:14: fo  ==> of, for
    ^ Warning: codespell identified likely spelling errors. Any false positives? Add them to the list of ignored words in test/lint/lint-spelling.ignore-words.txt
  ```

  Note:
  * I ignore several valid alternative spellings ~, but changed homogenous
  to homogeneous as the latter is a more specific term according to the
  Google dictionary definitions I found~
  * homogenous is present in tinyformat, hence should be addressed upstream
  * process' is correct only if there are plural processes

ACKs for commit b748bf:
  practicalswift:
    ACK b748bf6f50dda6bb57eadf697edc320b2695e01a
  fanquake:
    ACK https://github.com/bitcoin/bitcoin/pull/16186/commits/b748bf6f50dda6bb57eadf697edc320b2695e01a

Tree-SHA512: 9add7044643ce015e0a44d8b27a3f300d72c485ffff550fb6491a17f14528085289ec5caddfe02f291ea9b2cded38a0dd3079652a054e2d7fe2ff4f7b53db5d7

2 files changed, 2 insertions, 2 deletions

diff --git a/doc/developer-notes.md b/doc/developer-notes.md
index 45e55b7c40..f4fc55427d 100644
--- a/doc/developer-notes.md
+++ b/doc/developer-notes.md
@@ -280,7 +280,7 @@ thread](https://askubuntu.com/questions/50145/how-to-install-perf-monitoring-too
 for specific instructions.
 
 Certain kernel parameters may need to be set for perf to be able to inspect the
-running process' stack.
+running process's stack.
 
 ```sh
 $ sudo sysctl -w kernel.perf_event_paranoid=-1
diff --git a/doc/release-notes/release-notes-0.12.0.md b/doc/release-notes/release-notes-0.12.0.md
index cf74a17975..bc0d5ea3b0 100644
--- a/doc/release-notes/release-notes-0.12.0.md
+++ b/doc/release-notes/release-notes-0.12.0.md
@@ -127,7 +127,7 @@ minimum relay feerate. The initial minimum relay feerate is set to
 Bitcoin Core 0.12 also introduces new default policy limits on the length and
 size of unconfirmed transaction chains that are allowed in the mempool
 (generally limiting the length of unconfirmed chains to 25 transactions, with a
-total size of 101 KB).  These limits can be overriden using command line
+total size of 101 KB).  These limits can be overridden using command line
 arguments; see the extended help (`--help -help-debug`) for more information.
 
 Opt-in Replace-by-fee transactions