Fix typos and provide additional hints (#24)

Hi, this is just a small PR to fix some typos and provide additional hints in the README.

Author: seeebiii

README.md

@@ -2,11 +2,6 @@
 
 This library includes a set of programs that can be used to release multiple modules into various package managers.
 
-These scripts where extracted from
-[aws-delivlib](https://github.com/awslabs/aws-delivlib), which is used to
-release [jsii](https://github.com/aws/jsii) and the [AWS
-CDK](https://github.com/aws/aws-cdk).
-
 ## Usage
 
 This is an npm module. You can install it using `yarn add jsii-release` or `npm
@@ -82,9 +77,9 @@ npx jsii-release-maven [DIR]
 
 |Option|Required|Description|
 |------|--------|-----------|
-|`MAVEN_USERNAME` and `MAVEN_PASSWORD`|Yes|Username and password for maven repository. For Maven Central, you will need to [Create JIRA account](https://issues.sonatype.org/secure/Signup!default.jspa) and then request a [new project](https://issues.sonatype.org/secure/CreateIssue.jspa?issuetype=21&pid=10134)|
+|`MAVEN_USERNAME` and `MAVEN_PASSWORD`|Yes|Username and password for maven repository. For Maven Central, you will need to [Create JIRA account](https://issues.sonatype.org/secure/Signup!default.jspa) and then request a [new project](https://issues.sonatype.org/secure/CreateIssue.jspa?issuetype=21&pid=10134). Read the [OSSRH guide](https://central.sonatype.org/pages/ossrh-guide.html) for more details.|
 |`MAVEN_GPG_PRIVATE_KEY` or `MAVEN_GPG_PRIVATE_KEY_FILE` and `MAVEN_GPG_PRIVATE_KEY_PASSPHRASE`|Yes for Maven Central|GPG private key or file that includes it. This is used to sign your Maven packages. See instructions below|
-|`MAVEN_STAGING_PROFILE_ID`|Yes for Maven Central|Maven Central (sonatype) staging profile ID (e.g. 68a05363083174). Staging profile ID can be found **in the URL** of the "Releases" staging profile under "Staging Profiles" in https://oss.sonatype.org (e.g. `https://oss.sonatype.org/#stagingProfiles;11a33451234521`|
+|`MAVEN_STAGING_PROFILE_ID`|Yes for Maven Central|Maven Central (sonatype) staging profile ID (e.g. 68a05363083174). Staging profile ID can be found **in the URL** of the "Releases" staging profile under "Staging Profiles" in https://oss.sonatype.org if you are logged in (e.g. `https://oss.sonatype.org/#stagingProfiles;68a05363083174`).|
 |`MAVEN_ENDPOINT`|No|URL of Nexus repository. Defaults to `https://oss.sonatype.org`|
 |`MAVEN_SERVER_ID`|No|Used in maven settings for credential lookup (e.g. use `github` when publishing to GitHub). Defaults to `ossrh` for Maven Central.|
 |`MAVEN_REPOSITORY_URL`|No|Deployment repository when not deploying to Maven Central|
@@ -108,9 +103,10 @@ Export and publish the public key:
 $ gpg -a --export > public.pem
 ```
 
-Go to https://keyserver.ubuntu.com/ and submit the public key
+Go to https://keyserver.ubuntu.com/ and submit the public key.
+You can use `cat public.pem` and copy/paste it into the "Submit Key" dialog.
 
-Export and the private key:
+Export the private key:
 
 ```console
 $ gpg -a --export-secret-keys <fingerprint> > private.pem
@@ -158,7 +154,7 @@ npx jsii-release-nuget [DIR]
 
 **Publish to GitHub Packages**
 
-* Set `NUGET_SERVER` to `https://nuget.pkg.github.com/(`org or user`).
+* Set `NUGET_SERVER` to `https://nuget.pkg.github.com/(`org or user`)`.
 * Set `NUGET_API_KEY` to a token with write packages permissions.
 * Make sure the repository url in the project file matches the org or user used for the server