Update cheatsheets

tldr/ibmcloud-iam

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# ibmcloud iam
+
+> Manage identities and access to resources.
+> More information: <https://cloud.ibm.com/docs/cli?topic=cli-ibmcloud_commands_iam>.
+
+- List service IDs in an account:
+
+`ibmcloud iam service-ids`
+
+- List all API keys for a service ID:
+
+`ibmcloud iam service-api-keys {{service_id}}`
+
+- Create an API key for a service ID with a description and without confirmation:
+
+`ibmcloud iam service-api-key-create {{api_key_name}} {{service_id}} {{[-d|--description]}} {{description}} {{[-f|--force]}}`
+
+- List all actions available under this command:
+
+`ibmcloud iam help`