(DOCSP-39838) @norareidy removed monospace from headers for style guide.

source/write/replace.txt

@@ -155,7 +155,7 @@ argument. The following table describes the fields you can set in a
          For more information, see :manual:`Write Concern </reference/write-concern/>`
          in the {+mdb-server+} manual.
 
-Example: ``hint``
+Example: hint
 ^^^^^^^^^^^^^^^^^
 
 The following example uses the :ref:`create_index() <cpp-indexes>` method to create an ascending single-field index 
@@ -171,7 +171,7 @@ of the new index, ``name_1``. When ``opts`` is passed in as an optional argument
 
 To learn more about indexes, see :ref:`Optimize Queries with Indexes <cpp-indexes>`.
 
-Example: ``upsert`` 
+Example: upsert 
 ^^^^^^^^^^^^^^^^^^^
 
 The following example instantiates a ``mongocxx::options::replace`` object called ``opts``
@@ -225,7 +225,7 @@ member functions:
      - | Returns the ID of the document that was upserted in the database, if the driver
          performed an upsert.
 
-Example: ``matched_count()``
+Example: matched_count()
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 The following example uses the ``replace_one()`` method to replace a document that has
@@ -247,7 +247,7 @@ function to print the number of documents that match the search for a ``name`` f
 
       Matched documents: 11
 
-Example: ``upserted_id()``
+Example: upserted_id()
 ^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 The following example uses the ``replace_one()`` method to find and replace a document that has a ``name`` field value of ``"In-N-Out Burger"``.