chore: remove repetitive words

Signed-off-by: shandongbinzhou <[email protected]>

Author: shandongbinzhou

CHANGELOG.md

@@ -749,7 +749,7 @@ but you can always see the full list of changes via the Git repository.
 ## [1.22.1] - 2020-07-08
 
 A regression in proxied behaviour slipped in due to a non-compatible change
-in `url` slipping in in 2.1 which [caused a misbehaviour][env_proxy#8] in `env_proxy`.
+in `url` slipping in 2.1 which [caused a misbehaviour][env_proxy#8] in `env_proxy`.
 which was [fixed][env_proxy@5591cc7] but not released to crates.io until after
 1.22.0 was built.
 

src/test/mock/dist.rs

@@ -64,7 +64,7 @@ pub fn change_channel_date(dist_server: &Url, channel: &str, date: &str) {
 // The manifest version created by this mock
 pub const MOCK_MANIFEST_VERSION: &str = "2";
 
-// A mock Rust v2 distribution server. Create it and and run `write`
+// A mock Rust v2 distribution server. Create it and run `write`
 // to write its structure to a directory.
 #[derive(Debug)]
 pub struct MockDistServer {

tests/suite/cli_paths.rs

@@ -203,7 +203,7 @@ export PATH="$HOME/apple/bin"
             let profile = config.homedir.join(".profile");
             let fake_rc_modified = FAKE_RC.strip_suffix('\n').expect("Should end in a newline");
             raw::write_file(&profile, fake_rc_modified).unwrap();
-            // Run once to to add the configuration
+            // Run once to add the configuration
             config.expect_ok(&INIT_NONE);
             // Run twice to test that the process is idempotent
             config.expect_ok(&INIT_NONE);