Update text/0000-externally-implementable-functions.md

Co-authored-by: Jacob Lifshay <[email protected]>

Author: m-ou-se

text/0000-externally-implementable-functions.md

@@ -93,7 +93,7 @@ It is an error to have multiple `impl fn` items (across all crates) for the same
 
 `extern impl fn` items can have a visibility specifier (like `pub`), which determines who can *call* the function (or create pointers to it, etc.).
 
-*Implementing* the function can be done by any crate that name the item.
+*Implementing* the function can be done by any crate that can name the item.
 
 # Implementation