docs: updates lesson 10 verbiage for additional clarification

Signed-off-by: Anthony D. Mays <[email protected]>

Author: anthonydmays

lesson_10/README.md

@@ -22,7 +22,7 @@
 
 In this assignment, you will be given starting implementations for the `Library`, `Book`, and `Patron` classes. You will need to add the following enhancements to support new functionality:
 
-* We now want to support the concept of a `Librarian`. A librarian should be able to check out or check in books just like other patrons. Items can no longer be added or removed from the `Library` without a librarian.
+* We now want to support the concept of a `Librarian`. A librarian should be able to check out or check in items just like other patrons. Items can no longer be added or removed from the `Library` without a librarian.
 * We also want to support other types of media formats, including `Dvd`, `Magazine`, and `Newspaper` types. Patrons cannot check out `Magazine` or `Newspaper` items.
 * [Optional Stretch] Add the ability to search for items in the library by title, ISBN, author, or type. Extra credit will not be assigned unless the previous requirements have been met.
 * [Optional Stretch] Add the ability for patrons to be members of multiple libraries. See previous note on extra credit.