fix some typos

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

Author: cuishuang

tests/testsuite/cargo_command.rs

@@ -162,7 +162,7 @@ error: no such subcommand: `C`
 }
 
 #[cargo_test]
-fn find_closest_captial_b_to_b() {
+fn find_closest_capital_b_to_b() {
     cargo_process("B")
         .with_status(101)
         .with_stderr_contains(

tests/testsuite/config.rs

@@ -47,7 +47,7 @@ impl ConfigBuilder {
         self
     }
 
-    /// Unconditionaly enable nightly features, even on stable channels.
+    /// Unconditionally enable nightly features, even on stable channels.
     pub fn nightly_features_allowed(&mut self, allowed: bool) -> &mut Self {
         self.enable_nightly_features = allowed;
         self
@@ -1128,7 +1128,7 @@ unstable.print-im-a-teapot = true
 }
 
 #[cargo_test]
-/// Assert that atempting to set an unstable flag that doesn't exist via config
+/// Assert that attempting to set an unstable flag that doesn't exist via config
 /// is ignored on stable
 fn unstable_invalid_flag_ignored_on_stable() {
     write_config(

tests/testsuite/future_incompat_report.rs

@@ -111,7 +111,7 @@ fn test_single_crate() {
         write_config_toml("");
         check_has_future_compat();
 
-        // Check that we show a message with `frequence = "always"`
+        // Check that we show a message with `frequency = "always"`
         write_config_toml(
             "\
 [future-incompat-report]

tests/testsuite/pkgid.rs

@@ -111,7 +111,7 @@ Caused by:
         )
         .run();
 
-    // Bad file URL with simliar name.
+    // Bad file URL with similar name.
     p.cargo("pkgid './cratesio'")
         .with_status(101)
         .with_stderr(