Small doc tweak in SetDelayed; fix test msg typo

Author: rocky

mathics/builtin/assignment.py

@@ -550,7 +550,7 @@ class SetDelayed(Set):
      = p[3]
     >> f[-3]
      = f[-3]
-    It also works if the condition is set in the LHS
+    It also works if the condition is set in the LHS:
     >> F[x_, y_] /; x < y /; x>0  := x / y;
     >> F[x_, y_] := y / x;
     >> F[2, 3]

mathics/builtin/compilation.py

@@ -23,6 +23,10 @@ class Compile(Builtin):
       <dd>Compiles assuming each $xi$ matches type $ti$.
     </dl>
 
+    Compilation is performed using llvmlite , or Python's builtin
+    "compile" function.
+
+
     >> cf = Compile[{x, y}, x + 2 y]
      = CompiledFunction[{x, y}, x + 2 y, -CompiledCode-]
     >> cf[2.5, 4.3]
@@ -59,8 +63,7 @@ class Compile(Builtin):
     #> cf[0, -2]
      = 0.5
 
-    Loops and variable assignments are supported as python (not llvmlite)
-    functions
+    Loops and variable assignments are supported usinv Python builtin "compile" function:
     >> Compile[{{a, _Integer}, {b, _Integer}}, While[b != 0, {a, b} = {b, Mod[a, b]}]; a]       (* GCD of a, b *)
      =  CompiledFunction[{a, b}, a, -PythonizedCode-]
     """

mathics/builtin/numeric.py

@@ -419,7 +419,7 @@ class NIntegrate(Builtin):
     """
     <dl>
        <dt>'NIntegrate[$expr$, $interval$]'
-       <dd>returns a numeric approximation to the definite integral of $expr$ with limits $iterval and with a precision of $prec$ digits.
+       <dd>returns a numeric approximation to the definite integral of $expr$ with limits $interval$ and with a precision of $prec$ digits.
 
         <dt>'NIntegrate[$expr$, $interval1$, $interval2$, ...]'
         <dd>returns a numeric approximation to the multiple integral of $expr$ with limits $interval1$, $interval2$ and with a precision of $prec$ digits.
@@ -433,7 +433,7 @@ class NIntegrate(Builtin):
      = 2.50663
 
     >> Table[1./NIntegrate[x^k,{x,0,1},Tolerance->1*^-6], {k,0,6}]
-     : The especified method failed to return a number. Falling back into the internal evaluator.
+     : The specified method failed to return a number. Falling back into the internal evaluator.
      = {1., 2., 3., 4., 5., 6., 7.}
 
     >> NIntegrate[1 / z, {z, -1 - I, 1 - I, 1 + I, -1 + I, -1 - I}, Tolerance->1.*^-4]