chore: Fix typo in doc context.rst (#1890)

Co-authored-by: sobolevn <[email protected]>

Author: BradleyKirton

docs/pages/context.rst

@@ -91,8 +91,8 @@ Ok, you can directly use ``django.settings`` (or similar)
 in your ``_award_points_for_letters`` function.
 And ruin your pure logic with framework-specific details. That's ugly!
 
-Explicitly reling on context
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Explicitly relying on context
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 We have learned that this tiny change showed us
 that it is not so easy to rely on implicit app context.