Doc Fix for Issue 3175- OCI Vault image error (helidon-io#3224)

* bug fix for image

* fixed image issue and headings

* update headings

Author: ljamen

docs/mp/oci/03_vault.adoc

@@ -70,7 +70,7 @@ oci.vault.cryptographic-endpoint: "<...>"
 
 The OCIDs can be set up and found in OCI under Security tab.
 
-image::oci/ocivault.png[OCI Vault, align="center"]
+image::oci/vaultkey.png[OCI Vault, align="center"]
 
 REST endpoint should be setup as follows:
 
@@ -104,9 +104,9 @@ public class VaultResource {
 ----
 
 <1> `OciVault` support class is configured and injected automatically
-<2> <3> <4> <5> Properties a read from the configuration
+<2> <3> <4> <5> Properties read from the configuration
 
-== OCI Vault usage
+== OCI Vault Usage
 
 === Encryption
 
@@ -159,7 +159,7 @@ public String sign(@PathParam("text") String dataToSign) {
 }
 ----
 
-=== Verification of a signature
+==== Verification of a Signature
 
 To verify the correctness of the signature, submit a `GET` request to `/verify` endpoint:
 
@@ -180,7 +180,7 @@ To verify the correctness of the signature, submit a `GET` request to `/verify`
     }
 ----
 
-=== Creating a signature
+==== Creating a Signature
 
 To create a secret with a provided name, submit a `GET` request to `/secret`:
 
@@ -202,7 +202,7 @@ public String createSecret(@PathParam("name") String name,
 }
 ----
 
-=== Getting a signature
+==== Getting a Signature
 
 To get a secret by its OCID, use `GET` Request to `/secret`:
 
@@ -225,7 +225,7 @@ public String getSecret(@PathParam("id") String secretOcid) {
 }
 ----
 
-=== Deleting a signature
+==== Deleting a Signature
 
 To delete a secret, a `DELETE` request to `/secret` should be used:
 

docs/se/oci/03_vault.adoc

@@ -69,7 +69,7 @@ Current configuration requires `~/.oci/config` to be available in the home folde
 
 The OCIDs can be set up and found in OCI under Security tab.
 
-image::oci/ocivault.png[OCI Vault, align="center"]
+image::oci/vaultkey.png[OCI Vault, align="center"]
 
 Next, these values should be read and provided to `VaultService`:
 
@@ -168,7 +168,7 @@ private void sign(ServerRequest req, ServerResponse res) {
 }
 ----
 
-=== Verification of a signature
+==== Verification of a Signature
 
 To verify the correctness of the signature, submit a `GET` request to `/verify` endpoint:
 
@@ -190,7 +190,7 @@ private void verify(ServerRequest req, ServerResponse res) {
 }
 ----
 
-=== Creating a signature
+==== Creating a Signature
 
 To create a secret with a provided name, submit a `GET` request to `/secret`:
 
@@ -210,7 +210,7 @@ private void createSecret(ServerRequest req, ServerResponse res, String secretTe
 }
 ----
 
-=== Getting a signature
+==== Getting a Signature
 
 To get a secret by its OCID, submit a `GET` request to `/secret`:
 
@@ -231,7 +231,7 @@ private void getSecret(ServerRequest req, ServerResponse res) {
 }
 ----
 
-=== Deleting a signature
+==== Deleting a Signature
 
 To delete a secret, a `DELETE` request to `/secret` should be used: