fix references of builder's comparision factor to boost factor (#398)

apis/validator/block.v3.yaml

@@ -53,22 +53,22 @@ get:
         payload, and receives valid responses from both the builder endpoint _and_ the paired
         execution node. When these preconditions are met, the server MUST act as follows:
 
-        * if `exec_node_payload_value >= builder_comparison_factor * (builder_payload_value // 100)`,
+        * if `exec_node_payload_value >= builder_boost_factor * (builder_payload_value // 100)`,
           then return a full (unblinded) block containing the execution node payload.
         * otherwise, return a blinded block containing the builder payload header.
 
-        Servers must support the following values of the comparison factor which encode common
+        Servers must support the following values of the boost factor which encode common
         preferences:
 
-        * `builder_comparison_factor=0`: prefer the execution node payload unless an error makes it
+        * `builder_boost_factor=0`: prefer the execution node payload unless an error makes it
           unviable.
-        * `builder_comparison_factor=100`: default profit maximization mode; choose whichever
+        * `builder_boost_factor=100`: default profit maximization mode; choose whichever
           payload pays more.
-        * `builder_comparison_factor=2**64 - 1`: prefer the builder payload unless an error or
+        * `builder_boost_factor=2**64 - 1`: prefer the builder payload unless an error or
           beacon node health check makes it unviable.
 
         Servers should use saturating arithmetic or another technique to ensure that large values of
-        the `builder_comparison_factor` do not trigger overflows or errors. If this parameter is
+        the `builder_boost_factor` do not trigger overflows or errors. If this parameter is
         provided and the beacon node is not configured with a builder then the beacon node MUST
         respond with a full block, which the caller can choose to reject if it wishes. If this
         parameter is **not** provided then it should be treated as having the default value of 100.