gh-34981: add .twists() to EllipticCurve_finite_field
    
Fixes #34782.
    
URL: #34981
Reported by: Lorenz Panny
Reviewer(s): John Cremona

Author: Release Manager

src/doc/en/reference/references/index.rst

@@ -1794,6 +1794,11 @@ REFERENCES:
             *Tracking p-adic precision*,
             LMS J. Comput. Math. **17** (2014), 274-294.
 
+.. [Connell1999] Ian Connell.
+                 *Elliptic Curve Handbook*.
+                 Online lecture notes, available at
+                 https://git.hackade.org/ben/tinycrypt/raw/branch/master/docs/Elliptic%20Curve%20Handbook.pdf
+
 .. [CS1986] \J. Conway and N. Sloane. *Lexicographic codes:
             error-correcting codes from game theory*, IEEE
             Trans. Infor. Theory **32** (1986) 337-348.

src/sage/schemes/elliptic_curves/ell_field.py

@@ -232,7 +232,7 @@ def quartic_twist(self, D):
 
         INPUT:
 
-        - ``D`` (must be nonzero) -- the twisting parameter..
+        - ``D`` (must be nonzero) -- the twisting parameter
 
         .. NOTE::
 
@@ -271,11 +271,11 @@ def quartic_twist(self, D):
 
     def sextic_twist(self, D):
         r"""
-        Return the quartic twist of this curve by `D`.
+        Return the sextic twist of this curve by `D`.
 
         INPUT:
 
-        - ``D`` (must be nonzero) -- the twisting parameter..
+        - ``D`` (must be nonzero) -- the twisting parameter
 
         .. NOTE::