Update comment

datafusion/physical-expr/src/equivalence/class.rs

@@ -32,7 +32,7 @@ use datafusion_common::JoinType;
 /// A structure representing a expression known to be constant in a physical execution plan.
 ///
 /// The `ConstExpr` struct encapsulates an expression that is constant during the execution
-/// of a query. For example if a predicate like `A = 5` applied earlier in the plan `A` would 
+/// of a query. For example if a predicate like `A = 5` applied earlier in the plan `A` would
 /// be known constant
 ///
 /// # Fields

datafusion/physical-expr/src/equivalence/properties.rs

@@ -175,7 +175,7 @@ impl EquivalenceProperties {
     }
 
     /// Removes constant expressions that may change across partitions.
-    /// This method should be used when different partitions are fused.
+    /// This method should be used when data from different partitions are merged.
     pub fn clear_per_partition_constants(&mut self) {
         self.constants.retain(|item| item.across_partitions());
     }