reinclude the PyCall comparison in the docs

Author: Christopher Doris

docs/make.jl

@@ -40,6 +40,7 @@ makedocs(
         "conversion-to-python.md",
         "conversion-to-julia.md",
         "compat.md",
+        "pycall.md",
     ]
 )
 

docs/src/pycall.md

@@ -1,6 +1,6 @@
-# Comparison to PyCall
+# Comparison with PyCall
 
-The existing package [`PyCall`](https://github.com/JuliaPy/PyCall.jl) is another similar interface to Python. Here we note some key differences.
+Another similar interface to Python is provided by [`PyCall`](https://github.com/JuliaPy/PyCall.jl). Here we note some key differences.
 
 ## Flexibility of conversion