Fixed typo

README.md

@@ -17,4 +17,4 @@ youtube-dl -v --print-traffic --restrict-filename --write-description --write-in
 * Run `import.py`
 
 ### Schema:
-![schema](https://user-images.githubusercontent.com/7120851/42966031-cb83f216-8b69-11e8-9c9e-a8bcefdc7456.png)
+![schema](https://user-images.githubusercontent.com/7120851/42967825-72bc88fe-8b6f-11e8-81a7-f8e7e17077d8.png)

import.py

@@ -148,7 +148,7 @@ def create_format(cursor, **kwargs):
 
 def create_chapter(cursor, video_id, start_time, end_time, title):
 
-    cursor.execute('INSERT INTO chatper (start_time, end_time, title, video_id) VALUES (%s,%s,%s,%s) '
+    cursor.execute('INSERT INTO chapter (start_time, end_time, title, video_id) VALUES (%s,%s,%s,%s) '
                    'ON CONFLICT DO NOTHING',
                    (start_time, end_time, title, video_id))
     print("Created chapter for " + video_id)

schema.sql

@@ -156,21 +156,21 @@ create table subtitles
 )
 ;
 
-create table chatper
+create table chapter
 (
   id serial not null
-    constraint chatper_pkey
+    constraint chapter_pkey
     primary key,
   start_time integer not null,
   end_time integer not null,
   title text,
   video_id text not null
-    constraint chatper_video_id_fk
+    constraint chapter_video_id_fk
     references video
 )
 ;
 
-create unique index chatper_id_uindex
-  on chatper (id)
+create unique index chapter_id_uindex
+  on chapter (id)
 ;