Source docs more uniform; small doc bugs removed (#1187)

Author: martin-henz

docs/md/README_1.md

@@ -7,7 +7,7 @@ of Computer Programs, JavaScript Adaptation</a> (SICP JS).
 
 On the right, you see all predeclared names of Source §1, in alphabetical
 order. Click on a name to see how it is defined and used.
-These names come in two groups:
+They come in these groups:
   <ul>
     <li>
       <a href="../MISC/index.html">MISC</a>: Miscellaneous constants and functions

docs/md/README_2.md

@@ -6,7 +6,8 @@ of Computer Programs, JavaScript Adaptation</a> (SICP JS).
 ## What names are predeclared in Source §2?
 
 On the right, you see all predeclared names of Source §2, in alphabetical
-order. Click on a name to see how it is used. They come in these three groups:
+order. Click on a name to see how it is defined and used. They come in
+these groups:
   <ul>
     <li>
       <a href="../MISC/">MISC</a>: Miscellaneous constants and functions

docs/md/README_3.md

@@ -6,7 +6,7 @@ of Computer Programs, JavaScript Adaptation</a> (SICP JS).
 ## What names are predeclared in Source §3?
 
 On the right, you see all predeclared names of Source §3, in alphabetical
-order. Click on a name to see how it is used. They come in these two groups:
+order. Click on a name to see how it is defined and used. They come in these groups:
   <ul>
     <li>
       <a href="../MISC/index.html">MISC</a>: Miscellaneous constants and functions

docs/md/README_3_CONCURRENT.md

@@ -6,7 +6,7 @@ of Computer Programs, JavaScript Adaptation</a> (SICP JS).
 ## What names are predeclared in Source §3 Concurrent?
 
 On the right, you see all predeclared names of Source §3 Concurrent, in alphabetical
-order. Click on a name to see how it is used.
+order. Click on a name to see how it is defined and used. They come in these groups:
   <ul>
     <li>
       <a href="../MISC/index.html">MISC</a>: Miscellaneous constants and functions

docs/md/README_3_NON-DET.md

@@ -11,7 +11,7 @@ The program evaluator then automatically identifies the values that meet the req
 ## What names are predeclared in Source §3 Non-Det?
 
 On the right, you see all predeclared names of Source §3 Non-Det, in alphabetical
-order. Click on a name to see how it is used.
+order. Click on a name to see how it is defined and used. They come in these groups:
   <ul>
     <li>
       <a href="../MISC/index.html">MISC</a>: Miscellaneous constants and functions

docs/md/README_4.md

@@ -6,7 +6,7 @@ of Computer Programs, JavaScript Adaptation</a> (SICP JS).
 ## What names are predeclared in Source §4?
 
 On the right, you see all predeclared names of Source §4, in alphabetical
-order. Click on a name to see how it is used. They come in these two groups:
+order. Click on a name to see how it is defined and used. They come in these groups:
   <ul>
     <li>
       <a href="../MISC/index.html">MISC</a>: Miscellaneous constants and functions

docs/md/README_4_GPU.md

@@ -4,7 +4,7 @@ by making use of their GPUs!
 ## What names are predeclared in Source §4 GPU?
 
 On the right, you see all predeclared names of Source §4, in alphabetical
-order. Click on a name to see how it is used. They come in these two groups:
+order. Click on a name to see how it is defined and used. They come in these groups:
   <ul>
     <li>
       <a href="../MISC/index.html">MISC</a>: Miscellaneous constants and functions