Fix some typos in the issue templates

Author: simonjbeaumont

.github/ISSUE_TEMPLATE/bug-report.yml

@@ -93,8 +93,6 @@ body:
       placeholder: |
         ```console
         % swift -version
-
-        % sw_vers ||
         ```
     validations:
       required: true

.github/ISSUE_TEMPLATE/config.yml

@@ -23,7 +23,7 @@ contact_links:
     about: >
       Formally propose an addition, removal, or change to the features of the
       Swift OpenAPI Generator using the proposal process.
-  - name: 💬 Join the \#openapi Slack channel
+  - name: "💬 Join the #openapi Slack channel"
     url: https://swift-open-source.slack.com/archives/C05AZ55J75K
     about: >
       Chat with other adopters and contributors on the Swift Open Source Slack