Fix formatting for special function return types

presto-docs/src/main/sphinx/functions/aggregate.rst

@@ -38,7 +38,7 @@ General Aggregate Functions
 
     Returns the minimum value of all input values.
 
-.. function:: sum(x) -> (same as input)
+.. function:: sum(x) -> [same as input]
 
     Returns the sum of all input values.
 
@@ -56,13 +56,13 @@ Approximate Aggregate Functions
     (approximately normal) error distribution over all possible sets. It does
     not guarantee an upper bound on the error for any specific input set.
 
-.. function:: approx_percentile(x, p) -> (same as input)
+.. function:: approx_percentile(x, p) -> [same as input]
 
     Returns the approximate percentile for all input values of ``x`` at the
     percentage ``p``. The value of ``p`` must be between zero and one and
     must be constant for all input rows.
 
-.. function:: approx_percentile(x, w, p) -> (same as input)
+.. function:: approx_percentile(x, w, p) -> [same as input]
 
     Returns the approximate weighed percentile for all input values of ``x``
     using the per-item weight ``w`` at the percentage ``p``. The weight must be

presto-docs/src/main/sphinx/functions/math.rst

@@ -18,19 +18,19 @@ Operator Description
 Mathematical Functions
 ----------------------
 
-.. function:: abs(x) -> (same as input)
+.. function:: abs(x) -> [same as input]
 
     Returns the absolute value of ``x``.
 
 .. function:: cbrt(x) -> double
 
     Returns the cube root of ``x``.
 
-.. function:: ceil(x) -> (same as input)
+.. function:: ceil(x) -> [same as input]
 
     This is an alias for :func:`ceiling`.
 
-.. function:: ceiling(x) -> (same as input)
+.. function:: ceiling(x) -> [same as input]
 
     Returns ``x`` rounded up to the nearest integer.
 
@@ -42,7 +42,7 @@ Mathematical Functions
 
     Returns Euler's number raised to the power of ``x``.
 
-.. function:: floor(x) -> (same as input)
+.. function:: floor(x) -> [same as input]
 
     Returns ``x`` rounded down to the nearest integer.
 
@@ -62,7 +62,7 @@ Mathematical Functions
 
     Returns the base ``b`` logarithm of ``x``.
 
-.. function:: mod(n, m) -> (same as input)
+.. function:: mod(n, m) -> [same as input]
 
     Returns the modulus (remainder) of ``n`` divided by ``m``.
 
@@ -74,11 +74,11 @@ Mathematical Functions
 
     Returns ``x`` raised to the power of ``p``.
 
-.. function:: round(x) -> (same as input)
+.. function:: round(x) -> [same as input]
 
     Returns ``x`` rounded to the nearest integer.
 
-.. function:: round(x, d) -> (same as input)
+.. function:: round(x, d) -> [same as input]
 
     Returns ``x`` rounded to ``d`` decimal places.