rep-0155: typo

Co-authored-by: Chris Lalancette <[email protected]>

rep-0155.rst

@@ -171,7 +171,7 @@ Importantly, **this ID is not persistent**: once a face is lost (for instance,
 the person goes out of frame), its ID is not valid nor meaningful anymore.
 To cater for a broad range of applications (where re-identification might not be
 always necessary), there is no expectation that the face detector will attempt
-to recognise the face and re-assign the same face ID if the person re- appears.
+to recognise the face and re-assign the same face ID if the person reappears.
 
 .. note:: A face detector/face tracker MAY re-use the same face ID if it is 
    confident that the face if indeed the same.