logtree: chase out some documentation typos

Test Plan: only documentation changes.

X-Origin-Diff: phab/D627
GitOrigin-RevId: 78b1983bd67c632f467227689371113f26da5842
diff --git a/core/pkg/logtree/doc.go b/core/pkg/logtree/doc.go
index 5445e2e..caef97a 100644
--- a/core/pkg/logtree/doc.go
+++ b/core/pkg/logtree/doc.go
@@ -28,13 +28,13 @@
 
 Tree Structure
 
-As an example, consider application that produces logs with the following DNs:
+As an example, consider an application that produces logs with the following DNs:
 
     listener.http
-	listener.grpc
-	svc
-	svc.cache
-	svc.cache.gc
+    listener.grpc
+    svc
+    svc.cache
+    svc.cache.gc
 
 This would correspond to a tree as follows:
 
diff --git a/core/pkg/logtree/journal.go b/core/pkg/logtree/journal.go
index d65a2f4..bffe1b5 100644
--- a/core/pkg/logtree/journal.go
+++ b/core/pkg/logtree/journal.go
@@ -27,7 +27,7 @@
 // the root node of the tree.
 type DN string
 
-// Parth return the parts of a DN, ie. all the elements of the dot-delimited DN path. For the root node, an empty list
+// Path return the parts of a DN, ie. all the elements of the dot-delimited DN path. For the root node, an empty list
 // will be returned. An error will be returned if the DN is invalid (contains empty parts, eg. `foo..bar`, `.foo` or
 // `foo.`.
 func (d DN) Path() ([]string, error) {
@@ -180,7 +180,7 @@
 	}
 }
 
-// getEntries returns all entries at a given DN. This is faster then a scanEntries(filterExact), as it uses the special
+// getEntries returns all entries at a given DN. This is faster than a scanEntries(filterExact), as it uses the special
 // local linked list pointers to traverse the journal. Additional filters can be passed to further limit the entries
 // returned, but a scan through this DN's local linked list will be performed regardless.
 // journal.mu must be taken at R or RW level when calling this function.