docs: fix simple typos in import/README.md (lerna#4115)

Author: lumirlumir

libs/commands/import/README.md

@@ -47,15 +47,15 @@ $ lerna import ~/Product --flatten
 
 ### `--dest`
 
-When importing repositories, you can specify the destination directory by the directory listed in lerna.json.
+When importing repositories, you can specify the destination directory by the directory listed in `lerna.json`.
 
 ```
 $ lerna import ~/Product --dest=utilities
 ```
 
 ### `--preserve-commit`
 
-Each git commit has an **author** and a **committer** (with a separate date for each). Usually they're the same person (and date), but since `lerna import` re-creates each commit from the external repository, the **committer** becomes the current git user (and date). This is _technically_ correct, but may be undesirable, for example, on Github, which displays both the **author** and **committer** if they're different people, leading to potentially confusing history/blames on imported commits.
+Each git commit has an **author** and a **committer** (with a separate date for each). Usually they're the same person (and date), but since `lerna import` re-creates each commit from the external repository, the **committer** becomes the current git user (and date). This is _technically_ correct, but may be undesirable, for example, on GitHub, which displays both the **author** and **committer** if they're different people, leading to potentially confusing history/blames on imported commits.
 
 Enabling this option preserves the original **committer** (and commit date) to avoid such issues.