Add missing newlines to end of OWNERS files (#11190)

Noticed while trying to concatenate all the files, and fixed by
passing all OWNERS files through git stripspace.
diff --git a/input-events/OWNERS b/input-events/OWNERS
index 452445e..32be11b 100644
--- a/input-events/OWNERS
+++ b/input-events/OWNERS
@@ -1,2 +1,2 @@
 @johanneswilm
-@siusin
\ No newline at end of file
+@siusin
diff --git a/mediacapture-record/OWNERS b/mediacapture-record/OWNERS
index ae22475..649970a 100644
--- a/mediacapture-record/OWNERS
+++ b/mediacapture-record/OWNERS
@@ -1 +1 @@
-@miguelao
\ No newline at end of file
+@miguelao
diff --git a/pointerlock/OWNERS b/pointerlock/OWNERS
index 640884d..95ff443 100644
--- a/pointerlock/OWNERS
+++ b/pointerlock/OWNERS
@@ -1,2 +1,2 @@
 @scheib
-@siusin
\ No newline at end of file
+@siusin
diff --git a/presentation-api/OWNERS b/presentation-api/OWNERS
index 47731cf..cd77c0e 100644
--- a/presentation-api/OWNERS
+++ b/presentation-api/OWNERS
@@ -1,3 +1,3 @@
 @louaybassbouss
 @tidoust
-@zqzhang
\ No newline at end of file
+@zqzhang