Address review comments

Signed-off-by: Levi Harrison <git@leviharrison.dev>

docs/querying/operators.md

@@ -44,7 +44,7 @@ the result.
 
 The following trigonometric binary operators, which work in radians, exist in Prometheus:
 
-* `atan2` (https://pkg.go.dev/math#Atan2, _This is experimental_)
+* `atan2` (based on https://pkg.go.dev/math#Atan2, _This is experimental_)
 
 Trigonometric operators allow trigonometric functions to be executed on two vectors using
 vector matching, which isn't available with normal functions. They act in the same manner

web/ui/module/codemirror-promql/src/grammar/promql.grammar

@@ -17,7 +17,6 @@
 @precedence {
   pow @right,
   mul @left
-  atan2 @left,
   add @left,
   eql @left,
   and @left,

web/ui/module/codemirror-promql/src/grammar/test/expression.txt

@@ -840,3 +840,10 @@ sum:my_metric_name:rate5m
 
 ==>
 MetricName(MetricIdentifier(Identifier))
+
+# Testing Atan2 inherited precedence level
+
+1 + foo atan2 bar
+
+==>
+PromQL(Expr(BinaryExpr(Expr(NumberLiteral),Add,BinModifiers,Expr(BinaryExpr(Expr(VectorSelector(MetricIdentifier(Identifier))),Atan2,BinModifiers,Expr(VectorSelector(MetricIdentifier(Identifier))))))))

web/ui/module/codemirror-promql/src/grammar/tokens.js

@@ -14,6 +14,7 @@
 import {
   And,
   Avg,
+  Atan2,
   Bool,
   Bottomk,
   By,
@@ -58,6 +59,7 @@ export const specializeIdentifier = (value, stack) => {
 
 const contextualKeywordTokens = {
   avg: Avg,
+  atan2: Atan2,
   bottomk: Bottomk,
   count: Count,
   count_values: CountValues,