Friction: SQL: Fix type name.

src/Model/Friction/Friction.py

@@ -43,12 +43,12 @@ class Friction(SQLSubModel):
         execute("""
           CREATE TABLE friction(
             id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
-            ind INTERGER NOT NULL,
+            ind INTEGER NOT NULL,
             begin_kp REAL NOT NULL,
             end_kp REAL NOT NULL,
             reach INTEGER NOT NULL,
-            begin_strickler INTERGER,
-            end_strickler INTERGER,
+            begin_strickler INTEGER NOT NULL,
+            end_strickler INTEGER NOT NULL,
             FOREIGN KEY(reach) REFERENCES river_reach(id),
             FOREIGN KEY(begin_strickler) REFERENCES stricklers(id),
             FOREIGN KEY(end_strickler) REFERENCES stricklers(id)