Fix typos in the documentation and code comments (#99)

Co-authored-by: Dhruv Bhanushali <[email protected]>

docs/src/content/docs/about/comparison.mdx

@@ -6,7 +6,7 @@ description:
 ---
 
 <Pls /> has the distinction of being an `ls(1)` replacement specifically
-targeted a a pro audience. This leads to different motivations, different
+targeted a pro audience. This leads to different motivations, different
 decisions, different choices and different defaults. This also gives us the
 advantage of being able to provide features that are powerful but complex.
 

src/config.rs

@@ -5,7 +5,7 @@
 //! to tweak each individual string, change icons and add new node specs.
 //! Together they make `pls` the most customisable file lister.
 //!
-//! For example, the the CLI arg `--det` controls what metadata columns must be
+//! For example, the CLI arg `--det` controls what metadata columns must be
 //! shown in a given run, whereas the `.pls.yml` file can be used to change the
 //! individual name for these columns.
 //!