Clarify default setting of :static to reflect the Proc

Patch from @mwpastore, closes sinatra#1052

README.de.md

@@ -2541,7 +2541,7 @@ werden:
   <tr>
     <td>static</td>
     <td>true</td>
-    <td>false</td>
+    <td>File.exist?(public_folder)</td>
     <td>true</td>
   </tr>
 </table>

README.es.md

@@ -2336,7 +2336,7 @@ de ambos estilos:
   <tr>
     <td>static</td>
     <td>true</td>
-    <td>false</td>
+    <td>File.exist?(public_folder)</td>
   </tr>
 </table>
 

README.fr.md

@@ -2524,7 +2524,7 @@ mineures en ce qui concerne les paramètres par défaut :
   <tr>
     <td>static</td>
     <td>true</td>
-    <td>false</td>
+    <td>File.exist?(public_folder)</td>
     <td>true</td>
   </tr>
 </table>

README.ja.md

@@ -2319,7 +2319,7 @@ end
   <tr>
     <td>static</td>
     <td>true</td>
-    <td>false</td>
+    <td>File.exist?(public_folder)</td>
     <td>true</td>
   </tr>
 </table>

README.ko.md

@@ -2492,7 +2492,7 @@ end
   <tr>
     <td>static</td>
     <td>true</td>
-    <td>false</td>
+    <td>File.exist?(public_folder)</td>
   </tr>
 </table>
 

README.md

@@ -2562,7 +2562,7 @@ different default settings:
   <tr>
     <td>static</td>
     <td>true</td>
-    <td>false</td>
+    <td>File.exist?(public_folder)</td>
     <td>true</td>
   </tr>
 </table>

README.ru.md

@@ -2479,7 +2479,7 @@ end
     logging             true                    false
     method_override     true                    false
     inline_templates    true                    false
-    static              true                    false
+    static              true                    File.exist?(public_folder)
 
 ### Запуск модульных приложений
 

README.zh.md

@@ -2423,7 +2423,7 @@ end
   <tr>
     <td>static</td>
     <td>true</td>
-    <td>false</td>
+    <td>File.exist?(public_folder)</td>
     <td>true</td>
   </tr>
 </table>