Update 'manifest.yaml'

I changed it back to starting with 0 for "sort" as is done in the master repo.

manifest.yaml

@@ -53,7 +53,7 @@ projects:
       - 'ta'
     identifier: 'Introduction to Translation Manual'
     path: './introtomanual'
-    sort: 1
+    sort: 0
     title: 'Introduction'
     versification:
 -
@@ -61,7 +61,7 @@ projects:
       - 'ta'
     identifier: 'Wycliffe Associates Translation'
     path: './intro'
-    sort: 2
+    sort: 1
     title: 'Translating with Wycliffe Associates Resources'
     versification:
   -
@@ -69,7 +69,7 @@ projects:
       - 'ta'
     identifier: 'Translation Theory and Practice'
     path: './translate'
-    sort: 3
+    sort: 2
     title: 'Translation Theory and Practice'
     versification:
   -
@@ -77,7 +77,7 @@ projects:
       - 'ta'
     identifier: 'translation topics'
     path: './jit'
-    sort: 4
+    sort: 3
     title: 'Translation Topics'
     versification:
   -
@@ -85,6 +85,6 @@ projects:
       - 'ta'
     identifier: 'checking'
     path: './checking'
-    sort: 5
+    sort: 4
     title: 'Checking'
     versification: