Minor grammar fixes and a few added clarifications

en/documents.html

@@ -11,7 +11,7 @@
   defined in the <a href="schemas.html">schema</a>.
 </p><p>
   When configuring clusters, a <a href="reference/services-content.html#documents">documents</a>
-  element set what document types a cluster is to store.
+  element sets what document types a cluster is to store.
   This configuration is used to configure the garbage collector if it is enabled.
   Additionally, it is used to define default routes for documents sent into the application.
   By default, a document will be sent to all clusters having the document type defined.
@@ -259,8 +259,9 @@ <h2 id="document-expiry">Document expiry</h2>
 </pre>
 <p>
   When <code>garbage-collection="true"</code>, Vespa iterates over the document space to purge expired documents.
-  Vespa will invoke the configured GC selection for each stored document at most once every
+  Vespa will invoke the configured GC selection for each stored document once every
   <a href="reference/services-content.html#documents.selection">garbage-collection-interval</a> seconds.
+  It is unspecified when a particular document will be processed within the configured interval.
 </p>
   {% include important.html content="This is a best-effort garbage collection feature to conserve CPU and space.
   Use query filters if it is important to exclude documents based on a criterion."%}

en/overview.html

@@ -91,7 +91,7 @@ <h2 id="vespa-operations">Vespa operations</h2>
     free-text fields, structured data or <a href="nearest-neighbor-search.html">vector spaces (ANN)</a>.
     Any number of such conditions can be combined freely in boolean trees to
     define the full query to be executed.
-    Vespa will compute a query plan over the conditions which executed them
+    Vespa will compute a query plan over the conditions which executes them
     efficiently with any number of conditions such as e.g. filters combined with ANN conditions.
     Matches to a query can be passed through an inference step which can compute
     any business logic or machine-learned model expressed as a

en/query-api.html

@@ -397,7 +397,7 @@ <h3 id="matching-ranking-grouping">Matching, ranking, grouping</h3>
   <li>
     At this point the query enters one or more <a href="reference/services-content.html">content clusters</a>.
     In a content cluster with <a href="elasticity.html#grouped-distribution">grouped distribution</a>,
-    the query is dispatched to one group at a time using a
+    the query is dispatched to all content nodes within a single group using a
     <a href="reference/services-content.html#dispatch-tuning">dispatch policy</a>,
     while with a flat single group content cluster the query is dispatched to all content nodes.
   </li><li>

en/reads-and-writes.html

@@ -88,7 +88,7 @@ <h2 id="operations">Operations</h2>
     for test-and-set use cases.
     </p><p>
     A removed document is written as a tombstone, and later garbage collected -
-    see <a href="reference/services-content.html#removed-db-prune-age">removed-db / prune /age</a>.
+    see <a href="reference/services-content.html#removed-db-prune-age">removed-db / prune / age</a>.
     Vespa does not retain, nor return, the document data of removed documents.
     </p>
   </td>
@@ -98,7 +98,7 @@ <h2 id="operations">Operations</h2>
     Also referred to as <a href="partial-updates.html">partial updates</a>,
     as it updates one or more fields of a document by ID - the
     <a href="document-v1-api-guide.html#put">document v1 API</a> can be used to perform
-    <a href="reference/document-json-format.html#update">updates in the JSON Document format</a>,
+    <a href="reference/document-json-format.html#update">updates in the JSON Document format</a>.
     If the document to update is not found, it is not considered a failure.
     </p><p>
     Updates support <a href="document-v1-api-guide.html#create-if-nonexistent">create if nonexistent</a> (upsert).

en/schemas.html

@@ -520,7 +520,7 @@ <h2 id="inheritance">Inheritance</h2>
 <img src="/assets/img/inheritance-overview.svg" width="600px" height="auto"
      alt="Schema elements that support inheritance"/>
 
-{% include note.html content="Inheritance is not to confuse with <a href='parent-child.html'>parent/child</a>,
+{% include note.html content="Inheritance is not to be confused with <a href='parent-child.html'>parent/child</a>,
 which is a feature to import field values at query time."%}