Fix capitalization

Signed-off-by: YuPengZTE <yu.peng36@zte.com.cn>
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit 75e60fbe09f6065ed095671f98713d862c466858)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

docs/security/trust/content_trust.md

@@ -33,7 +33,7 @@ and [Notary](../../reference/commandline/cli.md#notary) configuration
 for the docker client for more options.
 
 Once content trust is enabled, image publishers can sign their images. Image consumers can
-ensure that the images they use are signed. publishers and consumers can be
+ensure that the images they use are signed. Publishers and consumers can be
 individuals alone or in organizations. Docker's content trust supports users and
 automated processes such as builds.
 

man/docker-run.1.md

@@ -990,7 +990,7 @@ network namespace, run this command:
 
 Note:
 
-Not all sysctls are namespaced. docker does not support changing sysctls
+Not all sysctls are namespaced. Docker does not support changing sysctls
 inside of a container that also modify the host system. As the kernel 
 evolves we expect to see more sysctls become namespaced.