Fixed some typos, add a spell check ci and others minor fix (#8890)

This PR adds a spell checker CI action that will fail future PRs if they introduce typos and spelling mistakes.
This spell checker is based on blacklist of common spelling mistakes, so it will not catch everything,
but at least it is also unlikely to cause false positives.

Besides that, the PR also fixes many spelling mistakes and types, not all are a result of the spell checker we use.

Here's a summary of other changes:
1. Scanned the entire source code and fixes all sorts of typos and spelling mistakes (including missing or extra spaces).
2. Outdated function / variable / argument names in comments
3. Fix outdated keyspace masks error log when we check `config.notify-keyspace-events` in loadServerConfigFromString.
4. Trim the white space at the end of line in `module.c`. Check: https://github.com/redis/redis/pull/7751
5. Some outdated https link URLs.
6. Fix some outdated comment. Such as:
    - In README: about the rdb, we used to said create a `thread`, change to `process`
    - dbRandomKey function coment (about the dictGetRandomKey, change to dictGetFairRandomKey)
    - notifyKeyspaceEvent fucntion comment (add type arg)
    - Some others minor fix in comment (Most of them are incorrectly quoted by variable names)
7. Modified the error log so that users can easily distinguish between TCP and TLS in `changeBindAddr`

1 files changed, 2 insertions, 2 deletions

diff --git a/README.md b/README.md
index eecb61daa..8de38df38 100644
--- a/README.md
+++ b/README.md
@@ -380,8 +380,8 @@ aof.c and rdb.c
 
 As you can guess from the names, these files implement the RDB and AOF
 persistence for Redis. Redis uses a persistence model based on the `fork()`
-system call in order to create a thread with the same (shared) memory
-content of the main Redis thread. This secondary thread dumps the content
+system call in order to create a process with the same (shared) memory
+content of the main Redis process. This secondary process dumps the content
 of the memory on disk. This is used by `rdb.c` to create the snapshots
 on disk and by `aof.c` in order to perform the AOF rewrite when the
 append only file gets too big.