Minor heading update according to the guideline (kubernetes#17747)

* Minor heading update according to the guideline

Fixed title of the document to use title case as described in the community guidelines.

* Capitalization fixes.

content/en/docs/concepts/overview/what-is-kubernetes.md

@@ -67,7 +67,7 @@ You provide Kubernetes with a cluster of nodes that it can use to run containeri
 * **Self-healing**  
 Kubernetes restarts containers that fail, replaces containers, kills containers that don’t respond to your user-defined health check, and doesn’t advertise them to clients until they are ready to serve.
 * **Secret and configuration management**  
-Kubernetes lets you store and manage sensitive information, such as passwords, OAuth tokens, and ssh keys. You can deploy and update secrets and application configuration without rebuilding your container images, and without exposing secrets in your stack configuration.
+Kubernetes lets you store and manage sensitive information, such as passwords, OAuth tokens, and SSH keys. You can deploy and update secrets and application configuration without rebuilding your container images, and without exposing secrets in your stack configuration.
 
 ## What Kubernetes is not
 
@@ -77,9 +77,9 @@ Kubernetes:
 
 * Does not limit the types of applications supported. Kubernetes aims to support an extremely diverse variety of workloads, including stateless, stateful, and data-processing workloads. If an application can run in a container, it should run great on Kubernetes.
 * Does not deploy source code and does not build your application. Continuous Integration, Delivery, and Deployment (CI/CD) workflows are determined by organization cultures and preferences as well as technical requirements.
-* Does not provide application-level services, such as middleware (for example, message buses), data-processing frameworks (for example, Spark), databases (for example, mysql), caches, nor cluster storage systems (for example, Ceph) as built-in services. Such components can run on Kubernetes, and/or can be accessed by applications running on Kubernetes through portable mechanisms, such as the [Open Service Broker](https://openservicebrokerapi.org/).
+* Does not provide application-level services, such as middleware (for example, message buses), data-processing frameworks (for example, Spark), databases (for example, MySQL), caches, nor cluster storage systems (for example, Ceph) as built-in services. Such components can run on Kubernetes, and/or can be accessed by applications running on Kubernetes through portable mechanisms, such as the [Open Service Broker](https://openservicebrokerapi.org/).
 * Does not dictate logging, monitoring, or alerting solutions. It provides some integrations as proof of concept, and mechanisms to collect and export metrics.
-* Does not provide nor mandate a configuration language/system (for example, jsonnet). It provides a declarative API that may be targeted by arbitrary forms of declarative specifications.
+* Does not provide nor mandate a configuration language/system (for example, Jsonnet). It provides a declarative API that may be targeted by arbitrary forms of declarative specifications.
 * Does not provide nor adopt any comprehensive machine configuration, maintenance, management, or self-healing systems.
 * Additionally, Kubernetes is not a mere orchestration system. In fact, it eliminates the need for orchestration. The technical definition of orchestration is execution of a defined workflow: first do A, then B, then C. In contrast, Kubernetes comprises a set of independent, composable control processes that continuously drive the current state towards the provided desired state. It shouldn’t matter how you get from A to C. Centralized control is also not required. This results in a system that is easier to use and more powerful, robust, resilient, and extensible.
 

content/en/docs/tasks/administer-cluster/out-of-resource.md

@@ -3,7 +3,7 @@ reviewers:
 - derekwaynecarr
 - vishh
 - timstclair
-title: Configure Out Of Resource Handling
+title: Configure Out of Resource Handling
 content_template: templates/concept
 ---