Fix inaccurate function name in rustc_const_eval docs

Author: pierwill

compiler/rustc_const_eval/src/interpret/operand.rs

@@ -520,8 +520,8 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
         Ok(OpTy { op, layout: place.layout })
     }
 
-    // Evaluate a place with the goal of reading from it.  This lets us sometimes
-    // avoid allocations.
+    /// Evaluate a place with the goal of reading from it.  This lets us sometimes
+    /// avoid allocations.
     pub fn eval_place_to_op(
         &self,
         place: mir::Place<'tcx>,

compiler/rustc_const_eval/src/interpret/place.rs

@@ -625,7 +625,7 @@ where
     }
 
     /// Computes a place. You should only use this if you intend to write into this
-    /// place; for reading, a more efficient alternative is `eval_place_for_read`.
+    /// place; for reading, a more efficient alternative is `eval_place_to_op`.
     #[instrument(skip(self), level = "debug")]
     pub fn eval_place(
         &mut self,