Improve lead paragraphs of the AQL UPDATE and REPLACE operations (#432)

Author: Simran-B

site/content/3.10/aql/high-level-operations/replace.md

@@ -3,8 +3,8 @@ title: '`REPLACE` operation in AQL'
 menuTitle: REPLACE
 weight: 60
 description: >-
-  You can use `REPLACE` operations to replace documents in a collection by
-  replacing all their attributes except the document keys, IDs, and revisions
+  The `REPLACE` operation removes all attributes of a document and sets the
+  given attributes, excluding immutable system attributes
 archetype: default
 ---
 Each `REPLACE` operation is restricted to a single collection, and the

site/content/3.10/aql/high-level-operations/update.md

@@ -3,8 +3,8 @@ title: '`UPDATE` operation in AQL'
 menuTitle: UPDATE
 weight: 55
 description: >-
-  You can use `UPDATE` operations to partially update documents in a collection
-  by adding or updating specific attributes
+  The `UPDATE` operation partially modifies a document with the given attributes,
+  by adding new and updating existing attributes
 archetype: default
 ---
 Each `UPDATE` operation is restricted to a single collection, and the

site/content/3.11/aql/high-level-operations/replace.md

@@ -3,8 +3,8 @@ title: '`REPLACE` operation in AQL'
 menuTitle: REPLACE
 weight: 60
 description: >-
-  You can use `REPLACE` operations to replace documents in a collection by
-  replacing all their attributes except the document keys, IDs, and revisions
+  The `REPLACE` operation removes all attributes of a document and sets the
+  given attributes, excluding immutable system attributes
 archetype: default
 ---
 Each `REPLACE` operation is restricted to a single collection, and the

site/content/3.11/aql/high-level-operations/update.md

@@ -3,8 +3,8 @@ title: '`UPDATE` operation in AQL'
 menuTitle: UPDATE
 weight: 55
 description: >-
-  You can use `UPDATE` operations to partially update documents in a collection
-  by adding or updating specific attributes
+  The `UPDATE` operation partially modifies a document with the given attributes,
+  by adding new and updating existing attributes
 archetype: default
 ---
 Each `UPDATE` operation is restricted to a single collection, and the

site/content/3.12/aql/high-level-operations/replace.md

@@ -3,8 +3,8 @@ title: '`REPLACE` operation in AQL'
 menuTitle: REPLACE
 weight: 60
 description: >-
-  You can use `REPLACE` operations to replace documents in a collection by
-  replacing all their attributes except the document keys, IDs, and revisions
+  The `REPLACE` operation removes all attributes of a document and sets the
+  given attributes, excluding immutable system attributes
 archetype: default
 ---
 Each `REPLACE` operation is restricted to a single collection, and the

site/content/3.12/aql/high-level-operations/update.md

@@ -3,8 +3,8 @@ title: '`UPDATE` operation in AQL'
 menuTitle: UPDATE
 weight: 55
 description: >-
-  You can use `UPDATE` operations to partially update documents in a collection
-  by adding or updating specific attributes
+  The `UPDATE` operation partially modifies a document with the given attributes,
+  by adding new and updating existing attributes
 archetype: default
 ---
 Each `UPDATE` operation is restricted to a single collection, and the