change title case to sentence case in Git preferences

Fixes: https://gitlab.com/kicad/code/kicad/-/issues/20784

common/dialogs/git/panel_git_repos_base.cpp

@@ -17,7 +17,7 @@ PANEL_GIT_REPOS_BASE::PANEL_GIT_REPOS_BASE( wxWindow* parent, wxWindowID id, con
 	wxBoxSizer* bLeftSizer;
 	bLeftSizer = new wxBoxSizer( wxVERTICAL );
 
-	m_enableGit = new wxCheckBox( this, wxID_ANY, _("Enable Git Tracking"), wxDefaultPosition, wxDefaultSize, 0 );
+	m_enableGit = new wxCheckBox( this, wxID_ANY, _("Enable Git tracking"), wxDefaultPosition, wxDefaultSize, 0 );
 	bLeftSizer->Add( m_enableGit, 0, wxEXPAND|wxLEFT|wxRIGHT|wxTOP, 13 );
 
 	m_gitSizer = new wxBoxSizer( wxVERTICAL );

common/dialogs/git/panel_git_repositories_base.fbp

@@ -103,7 +103,7 @@
                 <property name="gripper">0</property>
                 <property name="hidden">0</property>
                 <property name="id">wxID_ANY</property>
-                <property name="label">Enable Git Tracking</property>
+                <property name="label">Enable Git tracking</property>
                 <property name="max_size"></property>
                 <property name="maximize_button">0</property>
                 <property name="maximum_size"></property>