chore: rename sample titles (in XML)

another little polish for #859

test/data/OSMD_Function_Test_Tablature_Alleffects.musicxml

@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <score-partwise version="3.1">
     <work>
-        <work-title>OSMD_Function_Test_Tablature_Alleffects</work-title>
+        <work-title>OSMD Function Test Tablature - All Effects</work-title>
     </work>
     <identification>
         <creator type="composer">momo</creator>

test/data/OSMD_Function_Test_Tablature_Bends.musicxml

@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <score-partwise version="3.1">
     <work>
-        <work-title>OSMD_Function_Test_Tablature_Bends</work-title>
+        <work-title>OSMD Function Test Tablature - Bends</work-title>
     </work>
     <identification>
         <creator type="composer">momo</creator>

test/data/OSMD_Function_Test_Tablature_Hammeron_Pulloff.musicxml

@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <score-partwise version="3.1">
     <work>
-        <work-title>OSMD_Function_Test_Tablature_Hammeron_Pulloff</work-title>
+        <work-title>OSMD Function Test Tablature - Hammeron, Pulloff</work-title>
     </work>
     <identification>
         <creator type="composer">momo</creator>

test/data/OSMD_Function_Test_Tablature_Multibends.musicxml

@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <score-partwise version="3.1">
     <work>
-        <work-title>OSMD_Function_Test_Tablature_Multibends</work-title>
+        <work-title>OSMD Function Test Tablature - Multibends</work-title>
     </work>
     <identification>
         <creator type="composer">momo</creator>

test/data/OSMD_Function_Test_Tablature_Slides.musicxml

@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <score-partwise version="3.1">
     <work>
-        <work-title>OSMD_Function_Test_Tablature_Slides</work-title>
+        <work-title>OSMD Function Test Tablature - Slides</work-title>
     </work>
     <identification>
         <creator type="composer">momo</creator>

test/data/OSMD_Function_Test_Tablature_Vibrato.musicxml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="ISO-8859-1" ?>
 <score-partwise version="3.1">
     <work>
-        <work-title>OSMD_Function_Test_Tablature_Vibrato</work-title>
+        <work-title>OSMD Function Test Tablature - Vibrato</work-title>
     </work>
     <identification>
         <creator type="composer">momo</creator>

test/data/Test_Auto_Multirest_1.musicxml

@@ -2,7 +2,7 @@
 <!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.1 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
 <score-partwise version="3.1">
   <work>
-    <work-title>Test Subsequent Measure Rests</work-title>
+    <work-title>OSMD Function Test - Subsequent Measure Rests</work-title>
     </work>
   <identification>
     <encoding>

test/data/Test_Auto_Multirest_2.musicxml

@@ -2,7 +2,7 @@
 <!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.1 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
 <score-partwise version="3.1">
   <work>
-    <work-title>Test Diff Auto Multirest scenarios</work-title>
+    <work-title>OSMD Function Test - Various Auto Multirest Scenarios</work-title>
     </work>
   <identification>
     <encoding>

test/data/tabs_bend_and_release.musicxml

@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <score-partwise version="3.1">
     <work>
-        <work-title>bend release</work-title>
+        <work-title>OSMD Function Test Tablature - Bend, Release</work-title>
     </work>
     <identification>
         <encoding>