fix(cost-centers): use third-person verb in data source descriptions

Closes #51

Author: vmvarela

github/data_source_github_enterprise_cost_center.go

@@ -9,7 +9,7 @@ import (
 
 func dataSourceGithubEnterpriseCostCenter() *schema.Resource {
 	return &schema.Resource{
-		Description: "Use this data source to retrieve information about a specific enterprise cost center.",
+		Description: "Retrieves information about a specific GitHub enterprise cost center.",
 		ReadContext: dataSourceGithubEnterpriseCostCenterRead,
 
 		Schema: map[string]*schema.Schema{

github/data_source_github_enterprise_cost_centers.go

@@ -11,7 +11,7 @@ import (
 
 func dataSourceGithubEnterpriseCostCenters() *schema.Resource {
 	return &schema.Resource{
-		Description: "Use this data source to retrieve a list of enterprise cost centers.",
+		Description: "Retrieves a list of GitHub enterprise cost centers.",
 		ReadContext: dataSourceGithubEnterpriseCostCentersRead,
 
 		Schema: map[string]*schema.Schema{

website/docs/d/enterprise_cost_center.html.markdown

@@ -7,7 +7,7 @@ description: |-
 
 # github_enterprise_cost_center
 
-Use this data source to retrieve a GitHub enterprise cost center by ID.
+Retrieves information about a specific GitHub enterprise cost center.
 
 ## Example Usage
 

website/docs/d/enterprise_cost_centers.html.markdown

@@ -7,7 +7,7 @@ description: |-
 
 # github_enterprise_cost_centers
 
-Use this data source to list GitHub enterprise cost centers.
+Retrieves a list of GitHub enterprise cost centers.
 
 ## Example Usage