docs: fix link to math.rationalize (#2616)

Author: nukisman

docs/expressions/algebra.md

@@ -88,7 +88,7 @@ The rules used by `math.derivative` can be found on Wikipedia:
 
 ## Rationalize
 
-The function [`math.transform`](../reference/functions/transform.md)  transforms a rationalizable expression in a rational fraction.
+The function [`math.rationalize`](../reference/functions/rationalize.md) transforms a rationalizable expression in a rational fraction.
 If rational fraction is one variable polynomial then converts the numerator and denominator in canonical form, with decreasing exponents, returning the coefficients of numerator.
 
 ```js
@@ -107,4 +107,4 @@ const ret = math.rationalize('x+x+x+y',{},true)
               // ret.expression=3*x+y, ret.variables = ["x","y"]
 const ret = math.rationalize('-2+5x^2',{},true)
               // ret.expression=5*x^2-2, ret.variables = ["x"], ret.coefficients=[-2,0,5]
-```
+```