fixed errors in fu.py and radsimp.py.

Soumi7 · Soumi7 · commit d8f366c3017d · 2020-10-15T20:25:44.000+05:30
diff --git a/sympy/simplify/fu.py b/sympy/simplify/fu.py
@@ -1624,7 +1624,7 @@ def fu(rv, measure=lambda x: (L(x), x.count_ops())):
     References
     ==========
 
-    .. [1] http://rfdz.ph-noe.ac.at/fileadmin/Mathematik_Uploads/ACDCA/DESTIME2006/DES_contribs/Fu/simplification.pdf
+    .. [1] https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.657.2478&rep=rep1&type=pdf
     """
     fRL1 = greedy(RL1, measure)
     fRL2 = greedy(RL2, measure)
diff --git a/sympy/simplify/radsimp.py b/sympy/simplify/radsimp.py
@@ -995,7 +995,7 @@ def handle(expr):
 
 def rad_rationalize(num, den):
     """
-    Rationalize ``num``/``den`` by removing square roots in the denominator;
+    Rationalize ``num/den`` by removing square roots in the denominator;
     num and den are sum of terms whose squares are positive rationals.
 
     Examples
