refactor: rename file in number/float32/base/add

PR-URL: stdlib-js#5498
Reviewed-by: Athan Reines <[email protected]>

---
type: pre_push_report
description: Results of running various checks prior to pushing changes.
report:
  - task: run_javascript_examples
    status: passed
  - task: run_c_examples
    status: passed
  - task: run_cpp_examples
    status: na
  - task: run_javascript_readme_examples
    status: passed
  - task: run_c_benchmarks
    status: passed
  - task: run_cpp_benchmarks
    status: na
  - task: run_fortran_benchmarks
    status: na
  - task: run_javascript_benchmarks
    status: passed
  - task: run_julia_benchmarks
    status: na
  - task: run_python_benchmarks
    status: na
  - task: run_r_benchmarks
    status: na
  - task: run_javascript_tests
    status: passed
---

Author: gururaj1512

lib/node_modules/@stdlib/number/float32/base/add/manifest.json

@@ -28,7 +28,7 @@
     {
       "task": "build",
       "src": [
-        "./src/add.c"
+        "./src/main.c"
       ],
       "include": [
         "./include"
@@ -42,7 +42,7 @@
     {
       "task": "benchmark",
       "src": [
-        "./src/add.c"
+        "./src/main.c"
       ],
       "include": [
         "./include"
@@ -54,7 +54,7 @@
     {
       "task": "examples",
       "src": [
-        "./src/add.c"
+        "./src/main.c"
       ],
       "include": [
         "./include"