Fix typos (#19)

### Checklist

* [x] I have read the [Contributor Guide](../../CONTRIBUTING.md)
* [x] I have read and agree to the [Code of
Conduct](../../CODE_OF_CONDUCT.md)
* [x] I have added a description of my changes and why I'd like them
included in the section below

### Description of Changes

Fix typos identified by `typos-cli`

### Related Issues

src/ls.rs

@@ -157,9 +157,9 @@ impl NormalPrinter {
         let current_year = time::OffsetDateTime::now_utc().year();
 
         for (i, item) in items.into_iter().enumerate() {
-            if let Some(nd) = next_dir {
-                if *nd.1 == i {
-                    let dir = &(&prefixes[nd.0])[self.prefix_len..];
+            if let Some(dir) = next_dir {
+                if *dir.1 == i {
+                    let dir = &(&prefixes[dir.0])[self.prefix_len..];
                     let dir = &dir[..dir.len() - 1]; // Remove trailing delimiter
 
                     print_dir(&self.cc, self.display, dir);
@@ -203,8 +203,8 @@ impl NormalPrinter {
             }
         }
 
-        while let Some(nd) = next_dir {
-            let dir = &(&prefixes[nd.0])[self.prefix_len..];
+        while let Some(dir) = next_dir {
+            let dir = &(&prefixes[dir.0])[self.prefix_len..];
             let dir = &dir[..dir.len() - 1]; // Remove trailing delimiter
 
             print_dir(&self.cc, self.display, dir);

src/signurl.rs

@@ -60,7 +60,7 @@ pub struct Args {
     #[clap(
         short,
         default_value = "1h",
-        long_help = "The duration that ths signed url will be valid for.
+        long_help = "The duration that the signed url will be valid for.
 
 Times may be specified with no suffix (default hours), or one of:
 * (s)econds

src/util.rs

@@ -153,7 +153,7 @@ impl GsUrl {
     }
 }
 
-/// Converts a `gs://<bucket_name>/<object_name>` url into a regular object identifer
+/// Converts a `gs://<bucket_name>/<object_name>` url into a regular object identifier
 pub fn gs_url_to_object_id(url: &url::Url) -> anyhow::Result<GsUrl> {
     match url.scheme() {
         "gs" => {