Improve Streamlink documentation

CHANGELOG.md

@@ -22,6 +22,7 @@
 - Minor: The whisper highlight color can now be configured through the settings. (#5053)
 - Minor: Added missing periods at various moderator messages and commands. (#5061)
 - Minor: Improved color selection and display. (#5057)
+- Minor: Add a note in `Extarnal Tools` page, `Streamlink`. (#5076)
 - Bugfix: Fixed an issue where certain emojis did not send to Twitch chat correctly. (#4840)
 - Bugfix: Fixed capitalized channel names in log inclusion list not being logged. (#4848)
 - Bugfix: Trimmed custom streamlink paths on all platforms making sure you don't accidentally add spaces at the beginning or end of its path. (#4834)

src/widgets/settingspages/ExternalToolsPage.cpp

@@ -12,6 +12,15 @@
 #define STREAMLINK_QUALITY \
     "Choose", "Source", "High", "Medium", "Low", "Audio only"
 
+constexpr QStringView getBinaryName()
+{
+#ifdef Q_OS_WIN
+    return u"streamlink.exe";
+#else
+    return u"streamlink";
+#endif
+}
+
 namespace chatterino {
 
 ExternalToolsPage::ExternalToolsPage()
@@ -60,6 +69,14 @@ ExternalToolsPage::ExternalToolsPage()
                                  getSettings()->streamlinkUseCustomPath);
         groupLayout->setWidget(2, QFormLayout::SpanningRole, customPathCb);
 
+        auto note = new QLabel(
+            QStringLiteral(
+                "Chatterino expects the executable to be called \"%1\".")
+                .arg(getBinaryName()));
+        note->setWordWrap(true);
+        note->setStyleSheet("color: #bbb");
+        groupLayout->setWidget(3, QFormLayout::SpanningRole, note);
+
         auto customPath = this->createLineEdit(getSettings()->streamlinkPath);
         customPath->setPlaceholderText(
             "Path to folder where Streamlink executable can be found");