✏️ Issue templates: Fix Pagure reference and HTML entities from review

The initial migration from GitLab to Forgejo carried over a stale
"Pagure" reference in the LimeSurvey template's related-ticket label and
the HTML entity `&` leaked into section headings in both event
templates. These were likely artifacts from a prior Markdown-to-YAML
conversion step that encoded the ampersand as an HTML entity rather
than writing plain text.

Changed "Pagure ticket" to "Fedora Forge ticket" in `limesurvey.yml`,
and replaced `&` with the word "and" in the "This event and Fedora"
section headings in both `small-events.yml` and
`medium-large-events.yml`, per reviewer preference.

Addresses review feedback from Akashdeep Dhar (@t0xic0der) on PR #125.

Assisted-by: Claude Opus 4.6 (1M context)
Signed-off-by: Justin Wheeler <jwheel@redhat.com>

.forgejo/issue_template/limesurvey.yml

@@ -52,7 +52,7 @@ body:
   - type: input
     id: related-ticket
     attributes:
-      label: Pagure ticket, Wiki Page, or related event
+      label: Fedora Forge ticket, Wiki Page, or related event
     validations:
       required: true
 

.forgejo/issue_template/medium-large-events.yml

@@ -152,7 +152,7 @@ body:
   - type: markdown
     attributes:
       value: |
-        ## This event & Fedora
+        ## This event and Fedora
 
         Fedora gets many requests for events.
         These questions help us understand whether the Fedora Project is a good fit for the event and the interests of the Fedora community.

.forgejo/issue_template/small-events.yml

@@ -119,7 +119,7 @@ body:
   - type: markdown
     attributes:
       value: |
-        ## This event & Fedora
+        ## This event and Fedora
 
         Fedora gets many requests for events.
         These questions help us understand whether the Fedora Project is a good fit for the event and the interests of the Fedora community.