add const qualifier to the first arg of TextJoin (#5166)

* add const qualifier to the first arg of TextJoin

* Update raylib_api.* by CI

* Update raylib.h

---------

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Ray <raysan5@gmail.com>

tools/parser/output/raylib_api.json

@@ -9754,7 +9754,7 @@
       "returnType": "char *",
       "params": [
         {
-          "type": "char **",
+          "type": "const char **",
           "name": "textList"
         },
         {

tools/parser/output/raylib_api.lua

@@ -6933,7 +6933,7 @@ return {
       description = "Join text strings with delimiter",
       returnType = "char *",
       params = {
-        {type = "char **", name = "textList"},
+        {type = "const char **", name = "textList"},
         {type = "int", name = "count"},
         {type = "const char *", name = "delimiter"}
       }

tools/parser/output/raylib_api.txt

@@ -3734,7 +3734,7 @@ Function 434: TextJoin() (3 input parameters)
   Name: TextJoin
   Return type: char *
   Description: Join text strings with delimiter
-  Param[1]: textList (type: char **)
+  Param[1]: textList (type: const char **)
   Param[2]: count (type: int)
   Param[3]: delimiter (type: const char *)
 Function 435: TextSplit() (3 input parameters)

tools/parser/output/raylib_api.xml

@@ -2474,7 +2474,7 @@
             <Param type="int" name="position" desc="" />
         </Function>
         <Function name="TextJoin" retType="char *" paramCount="3" desc="Join text strings with delimiter">
-            <Param type="char **" name="textList" desc="" />
+            <Param type="const char **" name="textList" desc="" />
             <Param type="int" name="count" desc="" />
             <Param type="const char *" name="delimiter" desc="" />
         </Function>