Apply suggestions from code review

Co-authored-by: Cole Greer <112986082+Cole-Greer@users.noreply.github.com>

Author: xiazcy

docs/src/upgrade/release-3.7.x.asciidoc

@@ -31,7 +31,7 @@ complete list of all the modifications that are part of this release.
 
 ==== String Manipulation Steps
 This version introduces the following new string manipulation steps `asString()`, `length()`, `toLower()`, `toUpper()`, `trim()`,
-`lTrim()`, `rTrim()`, `reverse()`, `replace()`, `split()`, and `substring()`, as well as modifications to the `concat()` step introduced in 3.7.0.
+`lTrim()`, `rTrim()`, `reverse()`, `replace()`, `split()`, `substring()`, and `format()`, as well as modifications to the `concat()` step introduced in 3.7.0.
 
 ===== Updates to String Step concat():
 Concat has been modified to take traversal varargs instead of a single traversal. Users no longer have to chain
@@ -261,7 +261,7 @@ link:https://tinkerpop.apache.org/docs/x.y.z/reference/#split-step[split()-step]
 link:https://tinkerpop.apache.org/docs/x.y.z/reference/#substring-step[substring()-step],
 link:https://issues.apache.org/jira/browse/TINKERPOP-2672[TINKERPOP-2672]
 
-===== Format Step
+===== New String Step format()
 This step is designed to simplify some string operations. In general, it is similar to the string formatting function
 available in many programming languages. Variable values can be picked up from Element properties, maps and scope variables.
 
@@ -282,7 +282,7 @@ gremlin> g.V(1).format("%{name} has %{_} connections").by(bothE().count())
 See: link:https://issues.apache.org/jira/browse/TINKERPOP-2334[TINKERPOP-2334],
 link:https://tinkerpop.apache.org/docs/x.y.z/reference/#format-step[format()-step]
 
-==== List Traverser Based Steps
+==== List Manipulation Steps
 Additional List manipulation/filter steps have been added to replace the use of closures: `any()`, `all()`, `product()`,
 `merge()`, `intersect()`, `combine()`, `conjoin()`, `difference()`,`disjunct()` and `reverse()`.