chore: fix some comments

docs/DistributedFreeBSD.md

@@ -68,7 +68,7 @@ token = "my server's token"
 FreeBSD as a build client
 -------------------------
 
-On a FreeBSD client, make sure to add the right toolchains to to
+On a FreeBSD client, make sure to add the right toolchains to
 `~/.config/sccache/config`:
 
 ```toml

docs/Redis.md

@@ -10,7 +10,7 @@ Redis endpoint URL format can be found in the [OpenDAL source code](https://gith
 
 Redis can be configured as a LRU (least recently used) cache with a fixed maximum cache size. Set `maxmemory` and `maxmemory-policy` according to the [Redis documentation](https://redis.io/topics/lru-cache). The `allkeys-lru` policy which discards the *least recently accessed or modified* key fits well for the sccache use case.
 
-Redis over TLS is supported. Use the [`rediss://`](https://www.iana.org/assignments/uri-schemes/prov/rediss) url scheme (note `rediss` vs `redis`). Append `#insecure` the the url to disable hostname verification and accept self-signed certificates (dangerous!). Note that this also disables [SNI](https://en.wikipedia.org/wiki/Server_Name_Indication).
+Redis over TLS is supported. Use the [`rediss://`](https://www.iana.org/assignments/uri-schemes/prov/rediss) url scheme (note `rediss` vs `redis`). Append `#insecure` the url to disable hostname verification and accept self-signed certificates (dangerous!). Note that this also disables [SNI](https://en.wikipedia.org/wiki/Server_Name_Indication).
 
 If you want to authenticate to Redis, set `SCCACHE_REDIS_USERNAME` and `SCCACHE_REDIS_PASSWORD` to the username and password accordingly.
 

src/util.rs

@@ -200,7 +200,7 @@ impl TimeMacroFinder {
                 if !self.previous_small_read.is_empty() {
                     // In a rare pathological case where all reads are small,
                     // this will grow up to the length of the file.
-                    // It it *very* unlikely and of minor performance
+                    // It is *very* unlikely and of minor performance
                     // importance compared to just getting many small reads.
                     self.previous_small_read.extend(visit);
                 } else {