Corrected typos and formatting errors in plane tickets exercise.

Author: BethanyG

exercises/concept/plane-tickets/.docs/instructions.md

@@ -75,10 +75,10 @@ The function should then return a _dictionary_ of `passenger` as _key_, and `sea
 Conda Airlines would like to have a unique code for each ticket.
 Since they are a big airline, they have a lot of flights.
 This means that there are multiple flights with the same seat number.
-They want you to create a system that creates a unique ticket that is _12_ characters long string code for identification.
+They want you to create a system that formulates a unique ticket that is a _12_ character long string.
 
 This code begins with the `assigned_seat` followed by the `flight_id`.
-The rest of the code is appended by `0s`.
+The rest of the code is filled with `0s`.
 
 Implement a function `generate_codes(<seat_numbers>, <flight_id>)` that accepts a `list` of `seat_numbers` and a `string` with the flight number.
 The function should then return a `generator` that yields a `ticket_number`.

exercises/concept/plane-tickets/.meta/exemplar.py

@@ -39,7 +39,7 @@ def generate_seats(number):
         There is no row 13, and each row has 4 seats.
 
         Seats should be sorted from low to high.
-        For exampl: 3C, 3D, 4A, 4B
+        For example: 3C, 3D, 4A, 4B
 
     """
 
@@ -72,6 +72,7 @@ def assign_seats(passengers):
         output[passenger] = seat_number
     return output
 
+
 def generate_codes(seat_numbers, flight_id):
     """Generate codes for a ticket.
 

exercises/concept/plane-tickets/generators.py

@@ -34,12 +34,13 @@ def generate_seats(number):
         There is no row 13, and each row has 4 seats.
 
         Seats should be sorted from low to high.
-        For exampl: 3C, 3D, 4A, 4B
+        For example: 3C, 3D, 4A, 4B
 
     """
 
     pass
 
+
 def assign_seats(passengers):
     """Assign seats to passengers.
 
@@ -54,6 +55,7 @@ def assign_seats(passengers):
 
     pass
 
+
 def generate_codes(seat_numbers, flight_id):
     """Generate codes for a ticket.