docs: Fix minor grammar issue

Author: HaoZeke

src/dots.rs

@@ -181,7 +181,7 @@ impl Dot {
         } else {
             Err(anyhow!(format!(
                 "{} {:?}",
-                "Path does not exists :".red(),
+                "Path does not exist :".red(),
                 path
             )))
         }
@@ -201,7 +201,7 @@ impl DotOverride {
         let source = match (self.source(), origin) {
             (Some(source), _) => source,
             (None, Some(origin)) => origin,
-            _ => panic!("Dot as no source path"),
+            _ => panic!("Dot has no source path"),
         };
 
         let vars = self.vars().unwrap_or_else(Dot::default_vars);

src/lib.rs

@@ -47,7 +47,7 @@ impl Bombadil {
     pub fn link_self_config(config_path: Option<PathBuf>) -> Result<()> {
         let xdg_config_dir = dirs::config_dir();
         if xdg_config_dir.is_none() {
-            return Err(anyhow!("$XDG_CONFIG does not exists"));
+            return Err(anyhow!("$XDG_CONFIG does not exist"));
         }
 
         let xdg_config = Settings::bombadil_config_xdg_path()?;

src/settings.rs

@@ -204,7 +204,7 @@ impl Settings {
         };
 
         if path.exists().not() {
-            return Err(anyhow!("Dotfiles directory {:?} does not exists", &path));
+            return Err(anyhow!("Dotfiles directory {:?} does not exist", &path));
         }
 
         Ok(path)