help-docs: Fix minor errors in "Link to a message or conversation".

Removes the ":" which have accidentally ended up in the "Get a link
to a specific topic" and "Get a link to a specific stream" headings.

Renames the "Via browser's address bar" tab to "Web" so that it
stays consistent with other help center articles.

Fixes part of #22147.

templates/zerver/help/link-to-a-message-or-conversation.md

@@ -59,7 +59,7 @@ message](/help/quote-and-reply).
 
 1. Click **Copy link to message**.
 
-{tab|via-browser-address-bar}
+{tab|web}
 
 1. Click on the timestamp of the message.
 
@@ -67,7 +67,7 @@ message](/help/quote-and-reply).
 
 {end_tabs}
 
-### Get a link to a specific topic:
+### Get a link to a specific topic
 
 {start_tabs}
 
@@ -77,14 +77,14 @@ message](/help/quote-and-reply).
 
 1. Click **Copy link to topic**.
 
-{tab|via-browser-address-bar}
+{tab|web}
 
 1. Click on a topic in the left sidebar.
 
 1. Copy the URL from your browser's address bar.
 
 {end_tabs}
-### Get a link to a specific stream:
+### Get a link to a specific stream
 
 {start_tabs}
 
@@ -94,7 +94,7 @@ message](/help/quote-and-reply).
 
 1. Click **Copy Link**.
 
-{tab|via-browser-address-bar}
+{tab|web}
 
 1. Click on a stream in the left sidebar.
 

zerver/lib/markdown/tabbed_sections.py

@@ -77,7 +77,6 @@ TAB_SECTION_LABELS = {
     "web-public-streams": "Web-public streams",
     "via-user-profile": "Via the user's profile",
     "via-organization-settings": "Via organization settings",
-    "via-browser-address-bar": "Via browser's address bar",
 }